Solid Floor Slab All ground supported floors including XtroLiner boards should include a suitable damp-proof membrane laid in accordance with CP 102: 1973. (Code of practice for protection of buildings against water from the ground) and BRE Good Practice Guides 104 & 145. The DPM should extend up, meet and seal with the DPC. The floor insulation shall be Xtratherm XtroLiner XO/UF 80mm minimum manufactured to BS EN ISO 9001: 2000 by Xtratherm, comprising a CFC/HCFC free Class ‘O’ rigid modified polyisocyanurate (PIR) core with textured low emissivity foil facings. The XO/UF80mm to achieve a U-value of 0.20W/mK for the floor element. To be installed above slab in accordance with instructions issued by Xtratherm. Prepare a sub-base of compacted hardcore blinded with a layer of sand and covered with a 1,200 gauge damp proof membrane 300mm double welted and taped with gas proof tape at joints and service entry points. In-fill with a 125mm depth of C20 concrete. Where part L building regulations apply, the depth of the insulation will be calculated so that a site-specific U value of 0.20 W/sq.m K is achieved.
Floor Screed A 75mm-85mm sand and cement screed will be laid encasing under floor heating pipes on to floor insulation board protected by min 500g separating membrane and given a trowelled smooth finish, ready for clients floor finish. Alternatively a flow floor screed can be used. Like Tarmac’s TRUFLOW SELF LEVELLING SCREED. Subject to clarification - Perimeter insulation Perimeter detailing at wall/floor junctions is essential to reduce thermal bridging. By placing an upstand of Xtratherm Perimeter insulation 25mm thick around the external and internal wall/floor junctions. Lay min 500g separating layer over insulation, Under floor heating pipes as detailed.
Plumbing Underfloor heating Install to existing, Uponor 16mm MLC piped wet system installed at 150mm centres and connected to the existing system via a plus one manifold extension. Fit new room state Uponor Digital Programmable Thermostat White 230V 1047458, Uponor Manifold Actuator and Uponor 230V Remote Sensor all installed as per manufactures design and instruction.
Electrical All electrical work required to meet the requirements of Part P (electrical safety) must be designed, installed, inspected and tested by a competent person registered under a competent person selfcertification scheme such as BRE certification Ltd, BSI, NICEIC Certification Services. An appropriate BS7671 Electrical Installation Certificate is to be issued for the work by a person competent to do so which will be given to the client. Install 4 double power point 13A 2G Double Pole Switched Sockets (4306D). Install lighting for one centre light and switch control. All face plates to be Crabtree. Conversion of existing 3 No wall lights with new fittings.
Tender for the supply and installation of a new white PVCU Edwardian conservatory to the rear elevation of Woodleigh Flistridge Road Upper Minety SN16 9PS. Page 3