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New Timber Frame Wall Insulation

Our timber frame wall insulation ensures that unwanted air leakage and infiltration in your residential or commercial property is minimised, whilst sound-proofing is improved.

Polyurethane foams such as ours are hypo allergenic, which means that they contain no fibres, dust or noxious vapours. Mechanical and electrical services can be fixed between the foam and the plasterboard, so the efficiency of your building is never compromised. Spray foam insulation is very quick to install, minimising on overhead costs, site storage and waste - the perfect solution for improved thermal efficiency!

Contact our team today on 0800 690 6338 to arrange for timber frame wall insulation today!


BBA Certificate No. 11/4816.

Bright Home Renewables Insulation has undergone various performance tests. Certificates are available on request.

BBA Certification

Typical details for our timber frame wall insulation

New Timber Frame Wall

New timber frame wall

  1. Plasterboard and skim
  2. Vapour control layer to be lapped over DPC at floor level and returned to window reveal and jambs
  3. Unventilated air space
  4. Sheathing ply
  5. Breather membrane
  6. WALLTITE® CL100 insulation to achieve target U-value
  7. 50mm air gap
  8. Noggin to support plasterboard
  9. Sill plate
  10. DPC
  11. Treated timber cill support fixed to timber frame, clad and protected in DPC with insulation set above

Allow for differential movement at ALL openings, i.e. at window cill and window heads, as recommended by the timber frame manufacturer/UKTFA/TRADA: to accommodate differential movement and provide weather resistant and durable joint.

WALLTITE® spray foam insulation is applied directly between the studs onto the oriented srand board (OSB). The stud depth should be sufficient to meet the recommended elemental U-value.

Technical Data

Specification Insulation sprayed between studwork
NBS clause P10 205A
Lambda 90/90 0.025 to 0.028W/mK
Fire rating Class 1 to BS 476 Part 7
Adhesion to timber 136kPa


Thickness of WALLTITE (mm) U-value (W/m2k)
135 0.2
100 0.25
90 0.27

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