External Window Sills in Białystok

What Is an External Sill For?

An external sill is the element that protects the building from water. It drains water from under the window beyond the face of the facade and shields the sensitive joint between the window frame and the wall from leaks. A well-chosen and well-fitted sill protects the facade and extends its life.

Here in Podlasie an external sill gets the weather in its harshest form — freezing winters, swings around zero, snow that melts by day and freezes by night. That is why we choose it for resistance: our external sills are non-combustible and resistant to moisture, staining and chemicals. It is good quality at an accessible price — attractive and durable, resistant to the effects of the weather.

• Non-combustible.
• Resistant to moisture, staining and chemicals.
• Protect the facade and drain water from under the window.
• Weather-resistant, durable and attractive.

How Do We Match the Colour and Size?

An external sill should match the building as a whole, which is why we match it to the colour of the windows and facade. We adapt the colour and finish to the render, brick and dressings, so the sill doesn't stand out but instead completes the look of the window from the outside.

The overhang and a correct slope matter just as much — the sill has to project beyond the face of the facade and have an angle that drains water efficiently away from the wall. We settle all of this during the survey. External sills are compatible with uPVC, timber and aluminium windows, so we'll match them to any joinery — including new uPVC windows.

• Colour matched to the windows and facade.
• The right overhang and slope to drain water.
• Finish to suit render, brick and dressings.
• For uPVC, timber and aluminium windows.

Choosing and Fitting an External Sill

Choosing an external sill starts with a free on-site survey — we check the width of the window, the thickness of the wall and the state of the facade, then we choose the material, colour and overhang. An external sill is best planned together with replacing the windows, so the dressing of the joint with the wall comes out watertight.

We carry out the fitting with our own Pro-Plast crew, and the purchase can be spread over instalments. As a local Białystok firm we give a 5-year warranty. We're glad to combine an external sill with new uPVC windows — book a free survey or call 602 488 413. You'll find the other types of sill on the window sills page.

Frequently asked questions