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TLX RafterFit BBA Certified Multi-foil Rafter Level Insulation

RafterFit ... the latest advance in multi-foil for between rafter applications. The between-rafter multi-foil that saves time and guarantees 0.2 U-Value when installed according to BBA certificate No 06/4379. Three times faster to fit than Celotex Tuff-R or Kingspan TP10 between 100mm rafters with 400mm or 600mm spacings.

Amazing introductory offer

In celebration of TLX RafterFit winning the Professional Builder Magazine's - Best Products for Loft Conversions Award - and their new product line TLX RafterFit 600mm x 10 meters ...

We are, for a limited time offering some amazing deals on TLX RafterFit, as well as Rafter Lever Insulation Packages, which include TLX RafterFit (400mm wide and 600mm wide), Aluminized Tape, Celotex 50mm, and Knauf Vapourshield Plasterboard 12.5mm.

How to install RafterFit

TLX RafterFit - Overview

TLX RafterFit is the between-rafter insulation solution that saves valuable loft space and achieves a u-Value of 0.2 in half the time. A narrow width multi-foil TLX RafterFit can be used instead of PIR in 38x100mm or 50x100mm rafters, at 400mm or 600mm centres.

BBA certified Thinsulex RafterFit , the multi-foil for 400mm rafters which guarantees a 50mm air gap and replaces PUR rigid board between rafters. Location wings make lining up for stapling to rafters easy and the relevant thickness of PUR beneath rafters helps achieve the necessary U-value.

Web Dynamics is set to transform the life of installers with a fast to install, narrow width multi-foil which fits in between 400mm rafters instead of PUR.
Developed following extensive research, Thinsulex RafterFit is ideal for loft conversions and refurbishments where the original roof remains and the installer is working with 100mm rafters and a 50mm air gap.

BBA approved and Part L compliant, Thinsulex RafterFit can deliver significant time benefits for the installer. Independent expert* and early user trials have confirmed that it is up to three times faster to install between 400mm rafters than cutting and fitting PUR which ultimately translates into labour savings.
Ingenious location wings line up to the edge of the rafter for stapling and the system only requires the relevant thickness of PUR rigid board beneath rafters to achieve the necessary U-value.

Benefits of TLX RafterFit

Achieves 0.2 with 50mm of PIR – saving valuable loft space
Available in two widths, suitable for rafters set at 400mm centres or 600mm centres
Fully certified and compliant – tested in accordance with BRE 443
Reflects more than 80% of infra-red radiation
Lightweight and ideal for Restrictive loft spaces
25 year guarantee
Cuts CO² emissions and increases air tightness
Produces less waste, less mess and no dust
Hypoallergenic – no need to wear a face mask
Guaranteed to provide a U-value of 0.2 when installed to BBA Certificate No 06/4379

How it works

The product combines a core air layer with mirrored surfaces that reflect infra-red heat. Web Dynamics' ultra-sonic technology joins materials without stitching holes that can cause air leakage "“ a major contributor to heat loss - or moisture contamination. A guaranteed 50mm air gap between the insulation and the 1F felt then ensures a roof is well ventilated.
Each roll contains simple installation instructions and the lightweight product is ideal for restrictive loft spaces. There is also less waste, less mess and no dust and as the product is hypoallergenic there is no need to wear a face mask.

Professional Builder - Best Products for Loft Conversions Award,

Coveted Award for TLX RafterFit TLX RafterFit has been chosen as one of the best products for loft conversions by readers of the UK’s leading building trade magazine, Professional Builder.

Professional Builder editor Terry Smith presented to award to Web Dynamics’s sales director Mark Seddon on a visit to the company’s factory in Bolton, Lancashire in March 2009

Designed by loft converters, TLX RafterFit has become the product of choice for those in the trade.

Available in 400mm and 600mm centres it is the first multi-foil to fit the space inside the rafter minimising even further the loss of internal room space in your loft. Location wings along its edge make it simple to line up to the rafter for stapling.

It achieves a u-Value of 0.2 with just 50mm of PIR, sets a guaranteed 50mm air gap between insulation and non breathable felt to ensure a roof is well ventilated, and reflects more than 80% of infra-red radiation.

It improves acoustics in a roof and for peace of mind TLX RafterFit is BBA approved and Part L compliant.

The TLX multi-foil is lightweight, clean, hypoallergenic and easy to cut and fit into awkward spaces.

It replaces PIR between rafters which minimises the dust and mess from cutting and only requires the relevant thickness of PIR beneath rafters to achieve the required U-value.

Nick Searle said:"TLX RafterFit is such an easy product to use and builders have been quick to recognise its simplicity. We know interest has been high in the product since its launch and we are very pleased RafterFit has received this recognition from the readers of Professional Builder magazine.”

Installing RafterFit

RafterFit can be used in 38 or 50 x 100mm rafters at 400mm centres.

Measure the length of the rafter that needs insulating. Cut a length of RafterFit equal to this length + 50mm. Place the RafterFit against the rafters with a 25mm overlap at top and bottom.

Installing RafterFit

RafterFit can be used in 38 or 50 x 100mm rafters at 400mm centres.

	Measure the length of the rafter that needs insulating. Cut a length of RafterFit equal to this length + 50mm. Place the RafterFit against the rafters with a 25mm overlap at top and bottom.
	Staple the wings to the bottom edge of each rafter.
	Push the core inside the space and staple to the sides of the rafters. The RafterFit should run taut across the rafters "“ this ensures that a 50mm air space is maintained above the RafterFit, and a 20mm air space below.
	Install RafterFit into the next rafter space in exactly the same way. The flaps of adjacent strips of RafterFit should overlap along the edge of the rafter.
	Fit rigid board below the rafter. Fit 12.5mm standard plasterboard beneath the rigid board
RafterFit with Celotex Tuff-R 70mm battens and Gyproc Foil Backed Plasterboard 12.5mm

RafterFit with Celotex Tuff-R 70mm battens and Gyproc Foil Backed Plasterboard 12.5mm

Installation Instructions

RafterFit can be installed either way up.

Protective clothing is not required when handling RafterFit.

Bare electrical wiring must not be allowed in contact with RafterFit. PVC coated electrical wiring to normal domestic items such as light fittings may come into contact with RafterFit.

If electrical cables are surrounded by insulation they may need to be de-rated. Guidance should be sought from a qualified electrician.

Installation procedure

Measure the length of the sloping section of the roof from eaves to ridge.

Cut a piece of RafterFit equal to the length of the sloping section of the roof plus 50mm.

Position the RafterFit down two adjacent rafters with a 25 mm overlap at top and bottom.

Staple the edges of the wings along the bottom edge of each rafter. Push the central core of RafterFit up into the rafter space and staple to the inner face of the rafters on each side.

Ensure that the central core of RafterFit runs straight across the rafter space, and that there is a 50mm air space above and a 20mm air space below the RafterFit.

Staples should be at least 14mm depth.

At the ridge, slit the final 25mm of RafterFit between the two welds, tuck the central core inside the rafter space and staple it to the ridge beam. Ensure an airtight seal is made at both the sides and end of the rafter space.

At junction of roof and wall, slit the final 25mm of RafterFit between the two welds, tuck the central core inside the rafter space and staple it to the top of the wall plate. Ensure an airtight seal is made at both the sides and end of the rafter space.

Cutting

RafterFit can be cut using a sharp knife with the RafterFit resting on a board, or with scissors.

When fitting RafterFit around awkward shapes, slit the side with a sharp knife and stuff RafterFit into the space.

Taping

Short lengths of RafterFit can be joined together with a suitable tape. Thinsulex tape or Henkel All-Purpose Silver Duck tape are recommended. Pieces of RafterFit to be joined should be taped on both sides on a flat surface before installation.

Air Layers

Unventilated air layers form an important part of the RafterFit Insulation System.
If the air spaces are omitted, whilst there is no danger of condensation, the overall thermal performance of the structure will decrease, and the U value will be higher.
Additional insulation may be needed to achieve the desired U-value for the roof

Additional Insulation

Install additional insulation according to manufacturers instructions.

Storage

RafterFit rolls must be stored on a flat dry surface, protected from weather and direct sunlight.
Ensure when installing RafterFit that it does not come into contact with heat sources above 80°C.

Vapour Control and Ventilation

Where RafterFit is fitted below rafters it also performs as an effective vapour barrier, preventing water vapour from the property from penetrating the roof structure and possibly condensing on a cold surface. No additional vapour barrier is required, although the use of Gyproc Duplex Cream Foil-backed Plasterboard 12.5mm is recommended.

If a non-breathable (or 1F type) membrane is in place, then a 50mm ventilated air space beneath the felt is required.
If in any doubt about possible harmful condensation, contact Building Control for guidance.

Achieving better U-values

U-values lower than those given in the examples may be required to meet SAP targets or simply to provide a better insulated building. These can be achieved by using a greater thickness of additional insulation.

Optimising internal living space

L1B states that: "Practical considerations with respect to an increase in structural thickness (particularly in terraced dwellings) may necessitate a lower performance target."
The table below sets out U-values that can be achieved using RafterFit with different thicknesses of rigid board beneath rafters.

Downloads - select from drop-down menu below

Manufacturer's Contact Details

Web Dynamics Limited, Moss Lane, Blackrod, Bolton, Lancashire, BL6 5JB, England
Tel: Tel: +44 (0) 1204 695666 - Fax: +44 (0) 1204 695333
Email: Click here - Internet: www.webdynamics.com

This page was last updated

Friday February 3, 2012

TLX RafterFit from as little as £6.88m² - £27.50 per roll

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Select the "Go to Shopping Cart - Add Quantities" button, then add the required quantities on the shopping cart page.

TLX Rafter Fit 30mm, 0.4x10m = 4m²

Minimum order 13 Rolls = 52m²

13 plus rolls @ £7.19 per m² = £28.75 (£34.50 Inc-VAT)

17 plus rolls @ £7.13 per m² = £28.50 (£34.20 Inc-VAT)

21 plus rolls @ £7.07 per m² = £28.25 (£33.90 Inc-VAT)

25 plus rolls @ £7.00 per m² = £28.00 (£33.60 Inc-VAT)

29 plus rolls @ £6.94 per m² = £27.75 (£33.30 Inc-VAT)

33 plus rolls @ £6.88 per m² = £27.50 (£33.00 Inc-VAT)

TLX Rafter Fit 30mm, 0.6x10m = 6m² Minimum order 13 Rolls = 78m²

13 plus rolls @ £7.19 per m² = £43.13 (£51.76 Inc-VAT)

17 plus rolls @ £7.13 per m² = £42.75 (£51.30 Inc-VAT)

21 plus rolls @ £7.07 per m² = £42.38 (£50.86 Inc-VAT)

25 plus rolls @ £7.00 per m² = £42.00 (£50.40 Inc-VAT)

29 plus rolls @ £6.94 per m² = £41.63 (£49.96 Inc-VAT)

33 plus rolls @ £6.88 per m² = £41.25 (£49.50 Inc-VAT)

Aluminised Tape, 100mm x 45m = 45lm

1 plus rolls @ £0.17 per lm = £7.42 (£8.91 Inc-VAT)

5 plus rolls @ £0.17 per lm = £7.33 (£8.80 Inc-VAT)

10 plus rolls @ £0.17 per lm = £7.24 (£8.69 Inc-VAT)

15 plus rolls @ £0.16 per lm = £7.14 (£8.57 Inc-VAT)

20 plus rolls @ £0.16 per lm = £7.05 (£8.46 Inc-VAT)

25 plus rolls @ £0.16 per lm = £6.96 (£8.36 Inc-VAT)

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All information is extracted from that provided by the manufacturer, and links to their technical literature are provided above. Please contact the manufacturer for details beyond the scope of this web site.

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