Celotex FF4000 Product Applications

Celotex TD4000 is purpose designed for use in light traffic flat roof applications.

 

Product Details

These boards offer a quick and easy way to achieve effective thermally insulated flat roof decks for building structures such as small extensions or garage roofs where there will only be occasional trafficking. Tempcheck TD4000 incorporates a foil faced insulation board, to give the best insulation value bonded to a facing of 5.5mm exteriorgrade ply.

Tempcheck has a 5.5mm exterior grade plywood upper facing bonded to rigid polyisocyanurate foam (PIR) board, manufactured using zero ozone depletion potential blowing agents with low global warming potential.

 

Product Benefits

Celotex FF4000 insulation for a board that:

Is a three-in-one product to provide deck, vapour control layer and insulation

Warm roof construction due to over joist installation

Rapidly installed and weatherproofed Provides reliable long term energy savings for buildings

Ideal for use in occasionally trafficed applications

Rapidly installed and weatherproofed

Accepts a wide variety of weathering systems

 

Product Values

Celotex TD4000 Temp Check (supersedes TD3000 Range) Technical Data
Product Code	Board dimensions (width) x (length) = (m²)	Thickness (mm)	R-value (m2K/W)	U-Value (W/m²K)	Weight (kg/m2)	Board / Pack  weight (kg)
Celotex TD4096	12x1.2x2.4 = 34.56m²	96	4.10	0.25	6.44	222.57
Celotex TD4106	11x1.2x2.4 = 31.68m²	106	4.55	0.23	6.98	221.13
Celotex TD4116	10x1.2x2.4 = 28.8m²	116	5.00	0.21	7.29	209.95
Celotex TD4126	9x1.2x2.4 = 25.92m²	126	5.45	0.19	7.59	196.73
Thermal conductivity / Lambda value (W/mK) = 0.022: R-Value = Thermal Resistance; U-Value = Thermal Transmittance Co-efficient; Compresive strength (kPa) = ≥ 120: Dimensional stability = DS(TH)8; Water vapour restistance (MNs/g) = > 150:

Installation Guidelines

Celotex Tempchek TD4000 products must be installed in accordance with
these instructions

Ensure that joist spacing is at no more than 600mm centres and that the dimension of the joist is sufficient to span and accept additional loads. If asphalt weathering is to be used, joists should be at no more than 400mm centres.

Install the insulation boards, ensuring that the long edges are parallel to the line of the joists. 50mm x 50mm cross noggings should be inserted between joists to support the short edges of the boards.

Where boards butt together, bed onto twin beads of vapour sealant wide enough to accommodate this arrangement. This completes the vapour control layer (VCL) when combined with each board’s foil facings.

Lay the boards with the plywood side uppermost and stagger board joints. Leave a gap of approximately 2mm between boards and ensure a minimum 20mm bearing on joists and noggings.

Fix Celotex TD4000 with corrosion-proof Suretwist Composite Panel helical fasteners at a frequency to suit the design wind load. Refer to BS 6399-2 Code of Practice for Wind Loads. As a guide, 16 fasteners per board will resist a wind load of 2.22 KN/m2 based on a design load of 0.4 KN per fastener.

Ensure that fixings are no less than 10mm in from the board edge or 50mm from each corner. They should be equally spaced along the supporting joists. Fixings should be long enough to penetrate at least 38mm into the supporting timber.

Stagger opposing fixings where two board edges share the same joist or noggin.

Provide a complete insulation envelope by extending the wall insulation board up to the underside of the roof deck.

Provide a soffit or ceiling below the joists, as the surface of the product is not designed to be used as a decorative internal finish.

Ensure that the plywood is completely dry before any weathering system is applied.

Always use a Type 3G felt to BS 747 as a vapour diffusion first layer when using BUR weathering systems. When using a single-ply membrane, additional 12mm
plywood has to be applied on top of the Celotex TD4000.

Temporary protection must be provided for both the insulation and the waterproofing, if significant foot traffic is anticipated either during or after installation.

Falls

The structure should be designed so that the finished roof has a continuous, smooth and even slope towards the rainwater outlet or gutter. The minimum fall should be 1:80 to avoid ponding water.

Deck stability

Celotex TD4000 incorporates exterior grade WBP plywood to BS 1203, laminated to the surface. This gives the product excellent strength. Boards can span up to 600mm joist centres to provide a suitable substrate for a variety of weathering systems.

Vapour control layer

Celotex TD4000 has a built-in VCL due to the foil facers but this is discontinuous at the board joints. In some applications no further attention to moisture control may be necessary. Celotex would generally recommend the application of a vapour sealant between the tops of the boards at all edges. This is essential in areas of potentially high humidity.

Manufacturer's details

Celotex Limited, Lady Lane Industrial Estate, Hadleigh, Ipswich, Suffolk, IP7 6BA
Web site: Celotex Home Page
Web site: Celotex U-value Calclator

Celotex Technical Advisory Service

While just-insulation provides the very best products at the very best prices ...
For the very best advise we recommend you contact the Celotex Technical Advisory Service.
Tel: 0901 996 0100 (30p per minute) Fax: 01473 820 889 Email: technical@celotex.co.uk