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Thermlock PVC window reinforcement

Sheerframe has patented a unique reinforcing system - Thermlock® - which provides greater strength, better window security and better thermal performance than traditional reinforcing.

Thermlock FP is part of the fully reinforced zero carbon window construction.

More secure windows - up to 20%

Screw pick up ridges make fixing easier. Thermlock delivers 20% greater pull-out strength on handles, keeps, shootbolts and hinge fixings.

Fabricator-friendly

Warm and clean to the touch, Thermlock is more pleasant and safer to work with than steel or aluminium. Manufacturing processes are quieter and quicker than standard methods.