Timber frame walls generally provide better levels of thermal insulation than masonry walls of comparable thickness. However, the reduced mass of the wall means that any insulation material that is installed, needs to provide a higher level of acoustic performance to compensate.
Full-Fill Built in Insulation
Full-fill built-in mineral wool insulation, such as Knauf Insulation FrameTherm Rolls and Slabs, are installed as the walls are built, between the timber studs. his installation method allows additional insulation to be installed to the interior face of the wall, and / or into the cavity to further enhance thermal performance of the wall.
Blown in Insulation
Supafil Blowing Wool insulation is blown into the cavity of the walls, by an approved installing technician, via small holes drilled into the external wall. Again this method of insulating a timber frame wall allows for additional insulation to be installed to the interior face of the wall, and / or into the cavity to further enhance thermal performance.
Why Mineral Wool?
Mineral wool friction-fits between timber studs, losing joints and preventing air movement and infiltration through or around the insulation, minimising unwanted heat loss.
Mineral wool solutions are much quicker to install than rigid foam boards which require accurate cutting, improving speed and efficiency of installation.
Provides a perfect intimate contact between frames, offering a full-fill solution for all stud depths, centres and void shapes, ensuring maximum thermal and acoustic performance is maintained.
Can be installed either on-site or can be factory installed using our innovative Supafil Frame System, specially developed for off-site manufacturing processes, minimising waste, reducing labour demand and improving overall production efficiency.
Using Knauf Insulation FrameTherm Rolls between timber studs + 50mm Knauf insulated plasterboard internal lining
|Stud Thickness (mm)||Product Used||Masonry Outer Leaf (Cavity unventilated)||Tile/timber clad outer leaf (Cavity ventilated)|
|140||FrameTherm Roll 32||0.17||0.18|
|140||FrameTherm Roll 35||0.18||0.19|
|140||FrameTherm Roll 40||0.19||0.20|
|90||FrameTherm Roll 32||0.22||0.23|
|90||FrameTherm Roll 35||0.23||0.24|
|90||FrameTherm Roll 40||0.24||0.25|
Notes: Timber bridging is assumed as 15% and the stud depth is taken to be the same as the thickness of insulation specified. Thermal conductivity of timber studs is 0.12W/mK. Ventilated low emissivity airspace assumed to increase the R-value of the cavity to 0.29m2K/W and unventilated low emissivity airspace assumed to increase R-value of cavity to 0.77m2K/W. Knauf Insulated Plasterboard comprises 9.5mm plasterboard facing at 0.19W/mK where the remainder of the thickness is insulation with thermal conductivity of 0.023W/mK.
Using Supafil Frame between timber studs
|Stud Thickness (mm)||Vapour permeable membrane||Masonry Outer Leaf||Tile/timber clad outer leaf|
NOTE: Low E membrane used in the above calculations = Protect TF200 Thermo. U-values calculated assuming Supafil Frame installed density of 30kg/m3 and having thermal conductivity of 0.033W/mK.
|Application||Angle range (o)||Thermal conductivity (W/mK)||Installed density (kg/m3)|
|Enclosed rafter spaces||0-25||0.038||19.0|
|Enclosed rafter spaces and timber frame stud walls||0-90||0.036||23.0|
|Enclosed rafter spaces and timber frame stud walls||0-90||0.034||26.0|
|Enclosed rafter spaces and timber frame stud walls||0-90||0.033||30.0|