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Celotex TB4000 Insulation Board

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Price From:
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Celotex TB4000 Insulation Board

Celotex TB4000, available in as thin as 12mm, is a high performance PIR insulation ideal for overcoming thermal bridging and for use in two layer build ups, including between and under rafters and over stud in timber frame wall lining applications.

Board size: 1200 x 2400mm Thickness : 12-40mm Lambda: 0.022 W/mK Facer:

Low emissivity foil facings

Celotex TB4000 is available in a range of thicknesses unrivalled by any other PIR manufacturer. Suitable for a range of roof, wall and floor applications, Celotex TB4000 offers a high performance PIR insulation board that: Is suitable for use in a number of applications including roof, wall and floor systems Is specifically designed to eliminate thermal bridging Includes low emissivity foil facings offering enhanced thermal performance within cavity air spaces

Achieves an A+ rating when compared to the BRE Green Guide Is certified under BBA certificate number 95/3197 and 09/4667 Is available as a BIM object Has zero ozone depletion potential (zero ODP) and a low global warming impact (GWP) Future proofs the energy performance of new and existing buildings.

TB4012, TB4020, TB4025, TB4030, TB4035, TB4040, TB4045

Can be used for

  • Beam and Block Floors
  • Between and Over Rafters
  • Between and Under Rafters
  • Between and Under Joists Concrete Slab Floors
  • Garage Conversions
  • Loft Conversions
  • Pitched Roof Sarking T
  • imber Frame Wall Lining
  • Steel Stud Frame Walls
  • Single Timber Frame Wall Lining
  • Timber Frame Walls Sheathing

Products No Longer Required

You can return any unused product to us in its original condition for a refund within 14 days of delivery to you. You the buyer will pay the cost of returning the item. See below for estimates on the cost of returning items.

If you advise us of your return more than 14 calendar days following the date of delivery we will advise you whether the return is acceptable and any costs associated. Any request has to be made via our RMA page. Phone returns are not acceptable.

Faulty or Damaged Products

In the unlikely event that a delivered product (including special order items) is faulty or damaged, we will exchange it or provide you with a full refund, as long as we are notified of the product's fault within 48 hours (24 hours paving and windows) of it being delivered to you.
To arrange for the product to be collected, e-mail support@bso.co.uk  with your order number and details of the product to be returned. We will collect it at no expense to yourself, and either provide a replacement or process a refund if the product is no longer in stock. After 24 hours please refer to manufacturer returns policy.

Alternatively, you can make arrangements for collection of the product through our nominated carrier. The cost of the return will be at our expense. We require the return of the product within 14 days of the refund request being made.

All refunds will be made to the account used to purchase the product.

We reserve the right to inspect all returned products prior to agreeing to any part-refund, full refund or product exchange.


Returns via courier

All products marked as a parcel will be able to be returned by a standard courier the approx cost of this will be £7.50 per item. Costs may vary depending on the size and location of the parcel. 

If you need any further product information in order for you to estimate the cost of returning the item please contact us.

Returns via pallet or artic

All goods marked as 'BIG & HEAVEY' will incur a cost of  approx £45 per pallet for you to arrange. Costs may vary depending on where you are sending it from etc. 

If you need any further product information in order for you to estimate the cost of returning the item please contact us.