Through Coloured Render

27.1.1 Location

One Coat Through Coloured pre mixed pigmented render for application to all external walls (except areas of stone cladding).

27.1.2 Product Specification

Product : Weber.pral M Monocouche Render (or equal Approved) 27.1.3 Finish

Scrape textured finish 27.1.4 Background:

Masonry suitable to take a designation III (1:1:6) mix (should be confirmed by block manufacturer).

27.1.5 Preparation

The nature and condition of the background is a prime consideration in deciding the preparatory treatment

Prior to the application of weber.pral M. Substrate must provide suitable key / suction. Guidance in respect to movement

joints and bed joint reinforcement should be obtained from block manufacturer and MUST be adhered to. The

recommendations detailed in BS5628 : Part 3 and BS5262 should be observed.

27.1.6 Render Coat:

Proprietary reference: weber.pral M by Weber (or equal approved) Colour: To be agreed from Standard Colour Range.

Thickness: 15mm (finished) Finish: Scraped.

Angles – weber.pral renders:

Except where specified otherwise, form external angles using clean, straight chamfered timber battens.

When the surface is sufficiently hard, normally between 5-16 hours after application, scrape the surface in small circular

motions using a weber Scraping Tool to remove all laitance and bring the application to the specified thickness. Remove no

more than 3mm from the surface thickness.

Immediately after scraping, brush using a clean soft bristle brush to remove dust.

Ensure scraped finish is even over the entire surface, with no areas missed.

27.1.7 Accessories

Render only beads shall be of appropriate design, gauge and material as approved by Weber. Beads to be located and fixed as detailed on System Manufacturer's details (this may involve bedding RO beads in mortar).

Where mesh cloth is being incorporated as treatment to areas of potential high stress it shall be Weber. mesh standard duty, balanced, open weave, glass fibre mesh cloth, coated for alkaline resistance, available in 1m x 50m rolls.

28 Carpets

28.1 General

28.1.1 Scope of Work

Supply and installation of carpeting where shown on the drawings or as indicated in the finishes schedule.

28.1.2 Relevant British Standards

Conform to the requirements of the following British Standards where applicable:-

BS 1006 : 1974 Methods of test for colour fastness of textiles.

BS 4223 : 1989 Methods for determination of constructional details of textile floor coverings with yarn pile.

BS 4682 : Methods of test for dimensional stability of textile floor coverings.

BS 5229 : 1982 Methods of determination of tuft withdrawal force for carpets..

BS 5325 : 1982 Code of Practice for the installation of textile floor coverings.

BS 5422 : 1989 Classification of Adhesives for construction.

BS 5808 : 1979 Specifications for underlays for textile floor coverings.

28.1.3 Literature and Samples

Provide comprehensive technical literature on proposed materials with illustrations of all colours, patterns and textures available. Provide samples of proposed products if so requested by the Engineer.

Selection of product type, colour, pattern and texture is to be to the approval of the Engineer.

28.1.4 Guarantee

All carpeting is to be guaranteed for a period of at least 10 years from date of project handover against excessive surface wear, edge ravel, backing separation, shrinking, stretching and static electricity.

“Excessive surface wear” means loss of more than 15% by weight of face fibre.

28.2 Materials

28.2.1 Carpet

Proprietary heavy duty commercial quality tufted broadloom carpet “Autumn Harvest” or equivalent range by “Lees Commercial Carpets” or equal and approved. Colour will be selected by the Engineer.

28.2.2 Carpet Accessories and Fixing Materials

This includes underlay, edge binding tape, joining materials, grippers, etc.

All such items are to be as recommended by the carpet manufacturer, and as approved by the Engineer.

28.2.3 Edging Strip

Proprietary ribbed 25mm wide solid brass clip-in cover strip.

28.2.4 Adhesives

As recommended by the floor finish manufacturer of a type that allows the floor covering to be securely installed and easily stripped.

28.3 Execution

28.3.1 Execution Generally

Comply with BS 5325 Installation of textile floor coverings subject to any qualifications given below. Where necessary, check the dryness of the base in accordance with the appendix to the CP.

28.3.2 Preliminary Checks

Ensure that working conditions and background are suitable. Bases shall be clean and dust free, smooth, level and dry. Ensure there is sufficient material from the same production run for each specified type to guarantee uniform appearance when laid.

28.3.3 Planning and General Layout

Wherever possible and appropriate, lay carpet/linoleum with consideration to the following general requirements; when requirements conflict, agree the procedures with the Engineer:

a. Seams to run the length of the area.

b. Traffic routes along rather than across seams.

c. Light from windows not falling across seams d. Pile laying away from lighting.

e. Seams lining up in direction of manufacture.

f. Avoidance of cross-seams.

g. Patterning matched.

Lay out flooring material before cutting to layout approved by the Engineer, allowing for ready access to floor trunking or the like.

Lay out material to minimise cutting and avoid unduly narrow or small cut-offs.

28.3.4 Working with Adhesives

Comply with the following when laying carpets or linoleum on adhesive:- a) Clean the base and prime if necessary: allow primer to dry thoroughly.

b) Ensure there is adequate ventilation. Do not smoke (tobacco smoke and some adhesive fumes combine to form poisonous gases).

c) Spread adhesive to an even coverage without trowel ridges.

d) Remove any spilt adhesive with solvent immediately.

28.3.5 Installation Generally

Installation to be carried out in strict conformance with the manufacturers written instructions.

28.3.6 Completion

Leave floor finish clean and adequately protect the completed installations from any contamination or traffic that could harm the flooring till handover.

28.3.7 Warranties

Wear - Lifetime of carpet. No more than 10% face yarn loss by weight in normal use.

Static- Lifetime