TECHNICAL MANUAL COUNTERTOP by MANUSPONG MUSIKARAYAKUL

TECHNICAL MANUAL

COUNTERTOP APPLICATION

TECHNICAL MANUAL

COUNTERTOP APPLICATION

INDEX INTRODUCTION Product Specification Product Features Packaging Details Handling Transport And Storage

3 5 7 8 12 15

INSPECTION Pattern And Joint Laying Measuring and Inspection

18 19

FABRICATION Fabricate With Bridge Saw Machine Machining Principles Fabrication With Bridge saw

22 23 25

Fabricate With Water Jet Machine Machining Principles Machining Parameter For Water Jet Machine

28 29 31

Fabricate With CNC Milling Machine

FABRICATION Fabricate With Handheld Cut-out Recommendation Designing principles Grinding And Polishing Recommendation Cham Fering Recommendation

34 36 41 45 46

INSTALLATION Preparing The Structure Installation Over Concrete Kitchen Cabinet Installation Over Plywood Kitchen Cabinet

50 52 54

Quality Control Cleaning And Maintenance

55 56

Disclaimer

INTRODUCTION

x x

GRANDE COLLECTION The GRANDE Collection by COTTO is an extra-large porcelain slab produced in new format of 160Ă&#x2014;320 cm. with 12 mm. thickness. Its superior size extends possibilities and flexibility in architectural application from floor and wall covering to countertops and external cladding. It is produced by state-of-the-art technology from production in Italy. It offers superior properties such as high physical strength, high resistance to heat, frost, acid, and scratch, with low maintenance requirement.

SIZE AND THICKNESS 320 cm

160 cm

Top view (Lenght and Width)

12 cm Front view (Thickness)

COLOR, SURFACES and APPEARANCES BASALTINA

BIANCO

ARGENTO

GRAFITE

WOOD

WHITE

GREY

BLACK

INTRODUCTION

CEMENT

BONE

ASH

EBONY

Remark: photos are for illustrative purpose only, and may not represent final look of products.

INTRODUCTION

SPECIFICATION

Test Result

ISO Standard Reference

ISO Value

Length and width : admitted deviation, in%, of the average size of each tile from the production dimensions

ISO 10545-2

CONFORMING

+ 0, 15% + 2 mm -

Thickness : average thickness tolerance, in % versus production dimension

ISO 10545-2

CONFORMING

+- 5% +- 0,5 mm

Straightness of edges

ISO 10545-2

CONFORMING

+ 0, 1% + 1.5 mm -

Orthogonality in %

ISO 10545-2

CONFORMING

+ 0, 2% + 2 mm -

Flatness (curving in the middle, corner and warping)

ISO 10545-2

CONFORMING

+ 0, 35% + 2 mm -

Surface quality

ISO 10545-2

CONFORMING

% Water absorption

ISO 10545-3

Rupture force in N

ISO 10545-4

Specs Test Method

E < 0.5%

MINIMUM 1,000

CEMENT

WOOD STONE

BASALTINA

<0.1%

>1700

INTRODUCTION

SPECIFICATION

Specs Test Method

ISO Standard Reference

Test Result ISO Value

Bending strength N/mm2

ISO 10545-4

MINIMUM 35

Resistance to deep abrasion of unglazed tile

ISO 10545-6

<175 MM3

Thermal shocks resistant

ISO 10545-9

Resistance to staining

ISO 10545-14

Resistance to high concentrations of acids and alkali

ISO 10545-13

Resistance to low concentrations of acids and alkali

Resistance to house and swimming pool chemicals

Frost resistance

REQUIRED

CEMENT

WOOD STONE

BASALTINA

>40

<150 mm3

RESISTANT

RESISTANT RESISTANT

4.5

see Manusfacturer Declaration

UHA

ISO 10545-13

see Manusfacturer Declaration

ULA

ISO 10545-13

MINIMUM B

ISO 10545-12

REQUIRED

RESISTANT RESISTANT

RESISTANT

INTRODUCTION

PRODUCT FEATURES

COTTO Grande collection is porcelain slabs made from naturalmaterials such as feldspar, silica and clay. Thanks to its state-of-the-art CONTINUS+Technology, COTTO Grand collection offers superior properties for numerous functions and usages such as kitchen countertops, floor and wall coverings and facade cladding.

Technical features:

INTRODUCTION

PACKAGING DETAILS

Horizontal Pallet PALLET DIMENSIONS (cm) Finish

GLAZED & UNGLAZED

Length (cm)

345

Height (cm)

Width (cm)

thickness 12 mm

( Packing number 7 slabs )

Vertical Pallet PALLET DIMENSIONS (cm) Finish

GLAZED & UNGLAZED

Length (cm)

330

Height (cm)

Width (cm)

199

thickness 12 mm

( Packing number 22 slabs )

INTRODUCTION

PACKAGING DETAILS

PACKAGING AND TRASPORTATION SYSTEMS for any quantity and optimisation of spaces VERTICAL PALLET [A-FRAME] TRUCK

CONTAINER

Single lane handling

Insert forks in the short side

Anchor the loading using specific safety device

Fit special load isolation systems (LIS) Unload the good using specific belt anchorage systems

HORIZONTAL PALLET [CRATES] TRUCK

CONTAINER

Single lane handling

Max overlaping of 5 crates

Insert forks in hte long side

Anchor the loading using specific safety device

INTRODUCTION

PACKAGING DETAILS

A-FRAME 160 × 320 cm

(thickness 12 mm)

M2 / A-frame

PZ / A-frame

Total weight / A-frame (kg)

A-frame width (cm)

A-frame depth (side to pitchfork)

A-frame hight (cm)

112,64

3.496

330

199,6

slab weight A-frame weight (kg/pz) (kg/pz) 148,28

217.5

How many A-frame in a truck ?

How many A-frame for a 20’ CTNR

How many A-frame for a 40’ CTNR ?

max18

INTRODUCTION

PACKAGING DETAILS

CRATES 160 × 320 cm

(thickness 12 mm)

M2 / crate

PZ / crate

Total weight / crate (kg)

Crate width (side to pitchfork) cm

Depth crate (cm)

Crate hight (cm)

overlaping in storage

35,84

1.178

345

175

37,2

max10

overlaping in truck transport max5

How many crates in a truck ?

max15

How many crates for a 40’ CTNR ?

max6

How many crates for a 20’ CTNR ?

max18

INTRODUCTION

HANDLING

The containers loading operations can be carried from the ground or by an appropriately sized ramp. In case of loading from the ground, it is necessary to: Pick up the A-frame from the forecourt and place it on the container floor. Proceed at the wheel locking of the vehicle putting specific wedges under the wheels (sudden removals of the vehicle are avoided). Always conduct a brief inspection to the container floor. Note. According to the A-Frame dimensions and according to the forklift used, the extension of the forks can be important to lift up the packaging properly.

COTTO Grande is extra large format slabs arrive in oversized crates, which require specific handling equipment. To prevent damage from occurring during forklift operation, specific fork size must be used. For example, to handle a create of 160 × 320 cm tiles from the side, 122 cm/44” long forks are recommended. To hadle the same crate from the narrow end requires fork that are at least 213 cm/84” long. Lifting multiple crates with longer forks may require forklifts with a greater lift capacity. Specialized tools and equipment are currently available for the handling and installation of large porcelain surface. Innovative trowels with unique notch configurations can help increase the consistency of the mortar coverage on the back of the tile.

INTRODUCTION

HANDLING

COTTO Grande collection slabs must be handled, loaded, unloadedand transported by a forklift,gantry crane or professional lifting machines.n every case of handling and transport, the slabs should be balanced considering its center of gravity to prevent possible damages or slab breakages

LOADING A-FRAMES ON CTRS TO 160 X 320 CONTAINER 20’ BOX SIZE

WEIGHT

EXTERIOR LENGTH: 6.059 MM

UNLADEN WEIGHT (TARE): 2.050 – 2.650 KG

INTERNAL LENGTH: 5.860 MM

MAXIMUM LADEN WEIGHT: 18.270 – 27.980 KG

EXTERNAL WIDTH: 2.438 MM INTERNAL WIDTH: 2.310 MM EXTERNAL HEIGHT: 2.591 MM INTERNAL HEIGHT: 2.360 MM REAR OPENING WIDTH: 2.280 MM REAR OPENING HEIGHT: 2.270 MM INTERNAL VOLUME OF LOADING: 32-33,9 M3

LOADING CRATES TO 160×320 - TRUCKS

Load / unload the vehicle from the ground using standard forklifts: - 30 quintals capacity - 160 cm Fork length Load the crates into single line or overlap them (to a maximum of 5 crates), handling must be individual. It’s necessary to provide belt safety devices (anchorage by ropes, jute straps, nylon straps with stretcher).

INTRODUCTION

HANDLING

Handling Equipment 12

A-Frame to free move

Handling device to free move

Handling with Easy Move

Double Suction Cup 115 MM

INTRODUCTION

TRANSPORT AND STORAGE

Slabs should be loaded for transport and stacked for storage on or in purpose built supporting frameworks and structures such as metal A frames and metal racking systems. Such load bearing and support frames should be coated to prevent rust or any other material from contaminating the load. On such frameworks additional protective surfaces of suitable wood, rubber or plastic should be provided with the purpose of inhibiting the effects of impact and abrasion during transport and any subsequent handling and storage activities. Separate the packs of slabs by inserting wooden battens that should be thicker than the ropes employed for lifting purposes. For storage, and especially for transport, the battens used to separate the slab packs must be centrally aligned with respect to the slab and spaced at a distance of approximately 47 in. Notwithstanding and as a precaution, the tops of slabs should be covered to protect from airborne pollutants such as grit, oil, grease, rust and fuel that are likely to be present in stockyards or standing areas.

INSPECTION

PATTERN AND JOINT LAYING

Laying pattern and the joints between the panel in the same plane

Laying pattern and the joints between the sheets in a line - on the bottom or between the folds of the counter.

Laying pattern and the joints between the panels in the side (L).

INSPECTION

MEASURING & INSPECTION Slabs Inspection Before fabrication or transformation of COTTO Grande collection slabs, it is highly recommended to clean the slabs and inspect the appearance of the slabs thoroughly for: • Color defects such as tonality and contaminations • Physical defects such as chippings, blisters, cracks and fissures. • Any other anomaly that might be considered a defect. Please note that no claims or complaints will be accepted of fabricated, transformed, or installed slabs that had defects upon delivery

Working site Inspection Collecting dimension by template Use pieces of plywood to measure sizes, and dimension of countertops. Use cutter to cut plywood to design shapes . Place plywood and mark positions of holes and cut-out points.

Collecting dimension without template. Indicate all related information and cautions Take photos of working site in different angles, especially critical points which may need special attention in working process Use laser tools to increase precision in measuring flatness, angle and dimension.

FABRICATION

FEBRICATION

FABRICATE WITH BRIDGE SAW MACHINE Fabrication with industrial-level machine

Suggestions Aim copious quantities of water when cutting. Bridge saw must be accurately directed to the front and sides of the blade bit and as close as possible to the cutting area (as represented in the figure below). Make sure the workbench of the cutting machine is in good conditions and perfectly flat. If the milling bench is in poor condition, place a sheet of high-density technical rubber between the workpiece and the bench. 50% of cutting speed applied

50% of cutting speed applied

150 mm

Slow down the feed rate up to 50% for the first 6 inches inwards and the last 6 inches in outwards. To cut small-sized pieces, it is advised to firmly clamp the material in order to avoid movements during the cutting.

FEBRICATION

MACHINING PRINCIPLES

following cuts

Direction of

Before starting any process, the slab has to be trimmed off longitudinally and transversally at a distance from the edge which is proportional to the slab thickness, all the following cuts will be performed starting from the rough side towards the trimmed side as indicated in the figure.

Direction of following cuts

Last cuts

Warnings After each machining task, rinse the surface copiously with clean water before the workpiece has dry (better if in vertical position). The cutting direction must always be the same as the saw blade rotation direction.

FEBRICATION

MACHINING PRINCIPLES

1. TRIMMING SCHEME

3180 mm 1600 mm

Minimum actual dimensions

1580 mm

Thickness 12 mm -Minimum trimming 20 mm

3200 mm

2. PROCESSING ORDER

3rd cut

Example : cutting diagram for bridge milling

4th cut

1st drilled hole

2nd cut

6th cut

5th cut

Sequence of machining steps: 1. Core drilling (colour portions Blue) 2. Making through cuts (colour portion Orange) 3. Making interrupted cuts (colour portion Yellow)

FEBRICATION

FABRICATION WITH BRIDGE SAW

PRE-CUTTING DIAGRAM Specific measures: We recommend cutting in several passes if there is the presence of one or more of the following conditions: - Oversized flange not available - Low water flow rate - Bridge saw is in poor condition - Resting base is not flat

1 st cut

>1/2 saw blade

2 nd cut

Caution Fabrication with bridge saw may result in chipping. In order to improve quality of finished work, it is recommended to use grinding blade (number 60 and 120 ) after fabrication

section view

grinding with Handheld tool

(please read grinding recommendation) 25

FEBRICATION

FABRICATION WITH BRIDGE SAW

MULTIPLE PASS CUTTING DIAGRAM:

1 st cut 2 nd cut

INCREMENTAL PASS CUTTING: Specific measures: We recommend cutting in several passes if there if presence of one or more of the following conditions: - Oversize flange not available - Low water flow rate - Bridge saw is in poor condition - Resting base is not flat

STRAIGHT PASS CUTTING Thickness

Saw blade ø

Spindle revolutions

Feed rate

Rim speed

rpm

mm/min

m/sec

350

2200

212.41

Spindle revolutions

41.5

INCLINED PASS CUTTING Thickness mm

Saw blade ø

Feed rate

Rim speed

rpm

mm/min

m/sec

350

2200

212.41

41.5

FEBRICATION

FABRICATION WITH BRIDGE SAW

Parameters START OF PLUNGE CUT Thickness mm

Saw blade ø

Spindle revolutions

Feed rate

Rim speed

rpm

mm/min

m/sec

350

2200

212.41

41.5

STRAIGHT CUT Thickness mm

Saw blade ø mm

350

Spindle revolutions rpm

2200

Feed rate

Rim speed

mm/min

m/sec

212.41

41.5

INCLIENED CUT Thickness mm

Saw blade ø mm

350

Spindle revolutions

Feed rate

Rim speed

rpm

mm/min

m/sec

2200

212.41

41.5

Warning: Any increased current draw of the spindle is an indicator that the saw blade requires dressing using an abrasive stone.

FEBRICATION

FABRICATE WITH WATER JET MACHINE

Water Jet System is a new versatile fabrication system which delivers high - quality work. It is so flexible that it works with different materials and cutting patterns.

FEBRICATION

MACHINING PRINCIPLES

3. WORKPIECE ORIENTATION Make the holes for sinks or hobs toward the center of the slab and get the folded edges on the outer sides of the slab

Incorrect machining

Correct machining

FEBRICATION

FABRICATION WITH BRIDGE SAW

SINK CUTTING: Specific instructions If one or more of the following conditions apply, follow this cutting diagram: - Non-flat resting base - Islands measuring not more than 2600 × 600 mm - Sinks measuring not more than 560 × 480 mm

30 mm

Cut 1

Piercing 1

Cut 2

Piercing 2

50 mm

Warning After each machining task, rinse the surface with clean water before the work piece dry.

FEBRICATION

MACHINING PARAMETERS FOR WATER JET MACHINE

WATER JET Parameters piercing Thickness

Pressure

Speed

Abrasive

Bar

mm/min

kg/min

3880

700

0.38

Suggestions When possible, make the entry hole outside the slab. Alternatively, make the entry hole a few inches away from the cutting perimeter and never less than 7-32 in away. Water level in WATER JET TANK : It is good practice to keep the water equal to the 0 bench surface

Slab

Water level Metal slats

FEBRICATION

FABRICATE WITH CNC MILLING MACHINE

CNC MILLING MACHINE Parameters (Driller CNC) Thickness

Feed rate

mm/min

rpm

2500

Spindle revs

Parameters (Pofilling Polishing CNC) Thickness

Feed rate

mm/min

800

Spindle revs rpm

2200 - 2500

FEBRICATION

FABRICATION WITH GENERAL EQUIPMENT

Equipment for cutting slabs Cutting slabs is the first process of fabrication. It is recommended to use electric cutter and diamond-bits blades to ensure the best quality of cutting. There are two types of cutting blades as follows;

Cutting blade can be categorized into 2 types 1. Tiles cutting blade (4â&#x20AC;?) works well with porcelain slabs, but may result in high level of friction in cutting process. Therefore, it is recommended to cool down the simultaneously with water. 2. Granite cutting blade (4â&#x20AC;?) works well with both natural stones and porcelain slabs, but it may result in chipping occasionally. Therefore, please ensure consistent cutting and pushing force during cutting process. This type of blade works well in dry cutting.

FEBRICATION

Equipment for drilling holes It is recommended to use electric drill and hole saw, which work well with water cooling during the cutting process. This equipment is primarily used for drilling holes for faucet and wash basin.

Equipment for grinding It is recommended to use electric grinder

with

glass

grinding

blade

(GC60, GC120) or grinding blade (4â&#x20AC;?) which work well with both dry to wet process. Please ensure that fabricators are skillful and familiar with equipment to minimize damage and injury. In case of cutting long or large slabs, it is recommended to use cutting guide to improve accuracy in cutting, and to minimize damage and injury.

Equipment for polishing It is recommended to use electric polisher with polishing blade (4â&#x20AC;?), which enhance glossiness of the surface. Please start by using the rougher blades (no. 50/100/150/200/300/500/800) consequently following by the smoother blades (no. 1,000/2,000/3,000)

FEBRICATION

CUT-OUT RECOMMENDATION

Cutting with electric hand-held tools

1. Make sure that working space is clean and perfectly flat, then plan cutting pattern of slabs into smaller pieces. 2. Attach COTTO slab on working space/desk. It is recommended to place a layer of wooden plank below the slab to prevent possible damages.

3. Start cutting from edges around the slab with lower cutting speed. Continue cutting line until it reaches 1/3 of slab length, then stop and start cutting from opposite side of the slab until it reaches previous cutting mark. This is to prevent possible breakage of the slab. It is also important to make sure of consistent cutting force during cutting process. 4. Recheck the output to ensure the right designed size. Trim and polish with polishing disc (number 60 -120) to remove sharpness of the slab.

FEBRICATION

CUT-OUT RECOMMENDATION

Cautions and recommendation

1. Cutting with water feeding is highly recommended to reduce friction and potential damage during fabrication. 2. For cutting with water feeding, please feed water both from above and below the blade to increase cutting efficiency.

Recommended cuts should start by cutting down to just half a sheet .

Cut again to the Slab is cut off.

3. Damage of fabrication tools might be a result of; Slab feeding speed is too fast Too high friction 4. Damage of slabs might be a result of; Slabs are too hard for cutting blades or machines. It is not recommended to lower cutting speed , as cutting blades might be damaged. Weight of slabs is not balanced or not equally distributed. It is recommended to use double suction cup or free more to lift and handle slabs.

FEBRICATION

CUT-OUT RECOMMENDATION Piercing with general tools Piercing holes on COTTO Grande collection slabs can be achieved by general piercing tools in different shape such as circle and rectangular to serve different purposes. Piercing circular holes by hole saw 1) Make sure that working space/desk is clean and flat, and match hole size with proper hole saw. 2) Pierce with electric drill, clean dust and inspect the work quality.

*To ensure flatness and roundedness, use Stone Wet Polishing Kit with Diamond Pads

FEBRICATION

CUT-OUT RECOMMENDATION

Piecing large holes for sink or basins

3) Polish the slab by following instruction in “Polishing tools”

FEBRICATION

CUT-OUT RECOMMENDATION

Manual machining Warning During any type of manual processing, the workpiece should be adequately supported with a flat resting base in good condition, preferably made of wood. For any type of machining process , always use high water flow rates.

Suggested sequence The sequences described are subject to possible variations due to ongoing research into improvements in product fabrication. We recommend contacting your dealer or the COTTO Grande technical service department for any details you may require.

FEBRICATION

DESIGNING PRINCIPLES

Suggestion for sink cut the Countertop

1st Drille holes

0 Suggested core drill bit 35 mm 5th cut

4th cut

50 mm

3rd cut

Cut must be tangential to the circumference and must not proceed beyond the circumference

50 mm

Specific instructions If one or more of the following conditions apply, follow this cutting diagram: - Non-flat resting base - Islands measured not more than 2600 Ă&#x2014; 600 mm - Sinks measured not more than 560 Ă&#x2014; 480 mm 4th cut

2nd

1st Drill holes

cut 0 Suggested core drill bit 35 mm 7th cut

6th cut 3rd

cut

5th cut

FEBRICATION

DESIGNING PRINCIPLES

Internal Angles and Sink Hole All internal angles must follow a minimum radius of 5 mm. A greater radius imparts greater structural strength to the material (see figure 1) , while any non-radius angle will create a stress point on the top (see figure 2 and 3).

Figure 1

Figure 2

Figure 3

Minimum Distance Between Edge and Sink Hole The minimum recommended distance between the sink hole and the outer edge of the workpiece is 50 mm.

50 mm

We recommend supporting the top adequately with the reinforcement in slab, or using material having the same thermal expansion coefficient (e.g granite).

FEBRICATION

DESIGNING PRINCIPLES

Minimum Distance Between Slab and Wall The recommended minimum distance between the Slab and the wall is 2 mm.

Slab Thickness 12 mm.

2 mm

Minimum Distance Between Slab and Wall The recommended minimum distance between the Slab and the wall is 2 mm.

Sink Over Worktop

Slab Thickness 12 mm.

Flush-fitting sink

2 mm

Slab Thickness 12 mm.

2 mm

FEBRICATION

DESIGNING PRINCIPLES

Minimum Distance Between Slab and Induction Hob The recommended minimum distance between the Slab and the induction hob is 2 mm.

Over Worktop mounted induction hob Slab Thickness 12 mm.

2 mm Flush-fitting induction hob Silicone or seal Slab Thickness 12 mm.

> 5 mm

2 mm

Minimum Distance Between Slab and Gas Hob The recommended minimum distance between the Grande Slab top and the gas hob is 2 mm.

Over Worktop mounted induction hob SlabThickness 12 mm.

2 mm

FEBRICATION

GRINDING AND POLISHING RECOMMENDATION

Grinding by general tools

Grinding COTTO Grande collection slabs is quite similar to cutting and piercing holes. In addition to experiences and skills of workers , proper grinding tools are important for delivering quality work. Grinding tools for granite and glass can also be used with COTTO Grande. It is recommended to chamfer 2 mm at the edge of slabs at the end of process. There are two types of grinding tools - Adjustable grinding tools - Electric grinding tools.

FEBRICATION

CHAM FERING RECOMMENDATION Chamfering is one of profile techniques for 12 mm slabs. The process of chamfering is as follows;

1. Cut two pieces of slab with 45 degree angle at the edge of each piece 2. Attach two pieces of slab while ensuring 90 degree angle chamfer at least 1 mm.

Use epoxy filler

Polishing 3.

3. Apply epoxy glue at joint of two pieces of slab. 4. Use electric polishing machine to polish at the joint, starting from the rougher to the smoother blades 46

FEBRICATION

OVERHANG

SAFETY For more information on the safety of COTTO Grande handling, processing and disposal, we invite you to download the Safety Sheets from download area in our site. Parameters (high pressure) Material required

support

Thickness

Sketch

12 mm

No additional support required Recommend

A<150 mm A

Static Laod Without Impact Max weight 130 Kg

350 mm

A A

A A A

INSTALLATION

PREPARING THE STRUCTURE Fabricating slabs Preparing foundation for countertop installation Foundation materials for countertop application should be strong, solid , and firmly installed to accommodate weight of countertops. It is common to use plywood or concrete for foundation. The foundation should be carefully inspected before installation by following this process;

12 mm 8 mm

1. Concrete foundation should be built and firmly set at least seven days before countertop installation 2. Make sure that size of foundation is smaller than countertop, allowing at least 20mm on each side contacting the countertop (12mm for thickness of slabs and 8mm for cement glue)2 3. Measure angle and flatness of foundation before installation. If foundation is not entirely flat and smooth, it is recommended to fix or rebuild the foundation to ensure the best quality of installation3. 4. Make sure that surface of foundation is clean

INSTALLATION

PREPARING THE STRUCTURE

Preparing plywood foundation. 1. Make sure that size of foundation is smaller than countertop, allowing at least 20mm on each side contacting the countertop (12mm for thickness of slabs and 8mm for cement glue).

12 mm 8 mm

2. Make sure that foundation is firmly built, flat and clean

INSTALLATION

INSTALLATION OVER CONCRETE KITCHEN CABINET

It is recommended to install COTTO Grand Slabs cement glue by “sandwich technique” by following process;

1. Mix cement glue with clean water in ratio of 1 bag of cement and 5-6 lites of water

2. Mix until the paste is homogeneous, and leave 10 minutes before mixing again.

3. Use U - shaped trowel to apply cement paste over installation areas, make sure of constant application over the whole area.

4. Use V-shape trowel 3 mm to apply cement paste on the back of slabs consistently.

INSTALLATION

INSTALLATION OVER CONCRETE KITCHEN CABINET

6. Clean the slab surface to remove stain and dust

8. Leave epoxy grout for 24 hours

INSTALLATION

INSTALLATION OVER PLYWOOD KITCHEN CABINET

Countertop installation on plywood foundation

1. In case of installation on cement bonded particle board, you may follow instruction of installation on concrete foundation, and use cement glue with bonding strength higher than 1.0 M/mm2. It is recommended to use nail glue and modified silicone to increase adhesiveness 2. Apply nail glue and modified silicone to cover consistently on surface of foundation in order to maximize adhesiveness

3. Apply epoxy glue carefully at joint, and allow at least 5-10 minutes before polishing, and allow at least 24 hours to set firmly

INSTALLATION

QUALITY CONTROL

After installation of countertops, installers should inspect quality of finished work to ensure the best quality work, or to fix minor problems which may occur during installation. Quality control should cover following issues;

1. Overall visual look and touch 2. Correct dimension and sizes 3. Grouting and joint 4. Flatness and seamless joints 5. Clean surface without stains 6. Physical damage such as chipping, cracks, blisters 7. Consistent level of shininess from polishing

INSTALLATION

CLEANING & MAINTENANCE

General cleaning instruction

1. Clean your COTTO Grande collection countertop regularly by using soft cloth or a microfiber cloth to remove dust and stain from the surface. 2. COTTO Grande collection countertops can be washed and cleaned with warm water. Household detergent or cleaning agents can be used for better cleaning effects in the dose recommended by the manufacturer. (Avoid products containing hydrofluoric acid and its derivatives) Rinse with warm water and dry with a cloth or similar. 3. In case of spilled liquids or stains, it is highly recommended to clean and dry it as soon as possible. Leaving stains on the surface may cause difficulties in removing them. 4. Some of the detergents or household cleaning agents may contain waxes or polishing additives which can leave an oily film on the surface after repetitive use.

INSTALLATION

CLEANING & MAINTENANCE COTTO Grande ars non porous [due to their high quality raw materials, stringent production parameters and state of the are technology], hence any dust or deposited waste cannot penetrate the surface. But it is necessary to remove from the surface. For most cases only a damp cloth is sufficient for cleaning. Regular cleaning highlights the aesthetic features of the surface gives it exceptional shine. For highly aggressive cleaning caused by some common food and substances followthe table below.

TYPE OF STAIN

Cement

Oil

Coffee

Rubber

Rust

Ink

Candle wax

CHEMICAL PRODUCT

Acid

ISO 10545-2 Solvent

Alkaline - Solvent

ISO 10545-2 Solvent

Acid

ISOOxidant 10545-2 - Solvent

Solvent

EXAMPLE

Hydrolic acid

Ammonia

Ammonia or Bleach

Alcohol

Hydrolic acid

Alcohol

DISCLAIMER The aim of this manual is to offer some helpful guidelines and suggestions about machining, laying and maintaining the COTTO Grande slabs. Information contained herein reflects the state of art of the Producerâ&#x20AC;&#x2122;s technical, scientific and operational knowledge at the time of its publishing; it is therefore highly advised to keep up with the latest version available on the site www.cotto.co.th/grande in the download area. However, since it is a sintered ceramic material, we highly recommend the user not to restrict himself to the indications herein but to consult the wide technical, scientific and operational literature available on this subject, as well as to refer to professionals for the various machining and laying phases of ceramic products. Since no complaint will be accepted on installed materials with defects existing at delivery, it is advisable to check the color shade, thickness and surface finish at delivery. In case of complaints it is advisable to contact COTTO technical team, addressing your e-mail to cotto@scg.co.th ; our technicians will be at your disposal.

Thai Ceramic Co., Ltd. 1 Siam Cement Rd., Bangsue, Bangkok 10800, Thailand. www.cotto.co.th/cottogrande