Window frame surveys are carried out by inspecting the window frames from the outside.  Each frame is inspected at close quarters and tested for rot using a thin bladed screwdriver.

The inside sills and stiles are inspected visually through the glass, and where possible sashes are opened and prodded with the screwdriver.

Investigations are limited to gentle prodding because excessive digging into rotten areas can expose woodwork to rapid further deterioration.

A detailed schedule is produced identifying window parts that need replacement or repair.

The schedule is issued to independent contractors who can provide overall repair costs or a unit by unit repair cost.

We are continually researching repair methods and re-inspecting previously repaired work to provide the latest proven techniques in this work.