Kingspan Thermawall TW50 Cavity Wall Board 450mm x 1200mm Kingspan Size 30mm (16 Boards)

FREE DELIVERY For orders over £300
Brand: Kingspan 98% Positive reviews



Need something specific or  ordering in bulk?

The price shown is the price per pack. These products are sold in pack qtys only. Partial fill cavity wall insulation using Kingspan TW50 allows you to provide a robust barrier to run penetration. The board features a PIR core which is bounded by low emissivity composite foil on both sides which offers high water vapour resistivity.

The insulation board, with its low thermal conductivity value and low affinity for moisture offers the best insulation to the cavity walls.The board is fabricated using a blowing agent that features zero Ozone Depletion Potential(ODP) and a low Global Warming potential (GWP)

Thickness Boards Per Pack Coverage Per Pack 30mm 16 8.64m2 40mm 12 6.48m2 45mm 11 5.94m2 50mm 10 5.4m2 60mm 8 4.32m2 70mm 6 3.24m2 75mm 6 3.24m2 80mm 6 3.24m2 100mm 5 2.7m2
  1. Board Size- 1200mmx450mm
  2. Thermal Conductivity- 0.022 W/mK
  3. Compressive strength- typically exceeds 140 KPa
  4. Water vapour resistance- 100 MNs/g
  5. Fire Performance- Euroclass F

  1. High performance and rigid urethane insulation
  2. Clear cavity without moisture penetration
  3. It meets NHBC technical requirements when used with a 50 mm residual cavity
  4. The board is resistant top solvents, fungi and rodents.
  5. Has zero ODP and is CFC/HCFC free
  6. Easy to handle and install
  7. No effect of air movement

If correctly applied, the board has an infinite life. Apart from this, the durability greatly depends upon the supporting structure.

  • Quality systems: BS EN ISO 9001: 2015 /I.S. EN ISO 9001: 2015

The vast majority of our orders are dispatched within 2-4 working days and it’s free delivery for orders over £300 + VAT. Orders under this amount incur a £30 delivery fee. However, more speciality items or ordered in items may take a little longer to dispatch and may take up to 7-10 working days.
Once your order has been placed we will notify you by email approximately 12 to 48 hours later with a delivery date for your order. For items that have a longer lead time than 2 - 4 working days your delivery date notification email may take longer than 12 to 48 hours. Orders are only processed for delivery between 8.30am and 5pm Monday to Friday excluding bank holidays. We strongly advises not to book any tradesmen to do your work until after your material has been delivered to you, on rare occasions delays may happen that are out of our control which could result in a delay delivering material to site.
Please ensure there is a means of offloading your order on-site (unless otherwise agreed). Always check your delivery is correct when it arrives before you unload and sign for your order.
NOTICE FOR STONE/GLASS WOOL ORDERS 2019: As there's currently a high demand for wool materials nationwide, most glass and stone wool orders will take an estimated 4 weeks to deliver. This includes the following brands, Rockwool, Knauf, Isover, Superglass, Ursa. In some cases delivery can be made within a shorter time period and if you need any of these materials quicker than 4 weeks please feel free to contact our sales team on or 02035826399 to confirm delivery time. NOTICE FOR PLASTERBOARD ORDERS 2019: There's currently a nationwide supply issue with all standard and performance plasterboards due to manufacturers putting suppliers on allocation. As a result most plasterboard orders may take an estimated 4 weeks to deliver. This includes the following brands, British Gypsum, Knauf, Siniat, Gypfor. In some cases delivery can be made within a shorter time period and if you need any of these materials quicker than 4 weeks please feel free to contact us.


If you wish to check the delivery time of your order on the day of delivery please contact us through your Go Banana account. One of our dispatch team will then give you an eta where possible as to when you can expect delivery. Please note this is just an eta only and is not an exact time of delivery as delays can occur from when an order leaves our warehouse to when it arrives with the customer. We will try to be as accurate as possible with given eta's.


All our orders are dispatched using a local delivery service, for remote regions within the mainland UK or special delivery requests your order maybe dispatched with a courier or haulage company with a tracking number. There may be an additional charge for this courier service but you will be notified before dispatch of this if you wish to proceed. Some remote areas in North/North West Scotland and West Wales may not be covered in our free delivery or standard lead time terms. If delivery is required to these areas or similar remote areas outside the reach of our distribution please contact us before ordering to confirm lead times and whether we can ship under standard rates.