Please be aware that when installing a non-drip roof, H2 recommends that skylights are not installed, as these cannot be made non-drip and may indeed cause condensation problems in harsh conditions. Ask about this when purchasing.
Please be aware that a non-drip roof requires adequate ventilation to allow the process to work. By installing profile fillers you are reducing air-flow in the building and thus increasing the chances of condensation problems. We can supply ventilated filler blocks for the ridge. Ask about this when purchasing.
The standard window we install is an 800mm x 800mm double glazed uPVC window with a top sash opening. Other sizes and specifications are available on request.