Window & door frame sealing in North London & the Home Counties
Window & door frame sealing covers uPVC, timber and aluminium perimeters resealed against draught and water ingress. Old, cracked sealant removed in full and the joint finished weather-tight — inside, outside, or both.
What the job includes
Before
After- Full removal of existing, cracked or shrunk sealant
- Frame and reveal cleaned and prepared before application
- Correct weather-grade sealant matched to the frame material
- uPVC, timber and aluminium windows and doors covered
- Internal and external perimeter joints, as the job needs
- Work area left clean, with all offcuts and masking removed
How the work runs
Scope agreed
We confirm which frames are in scope and price the job before starting.
Strip out
Old, cracked sealant removed back to a clean frame and reveal.
Prepare
Surfaces cleaned and dried so the new sealant bonds and stays flexible.
Apply & finish
Weather-grade sealant applied and tooled to a clean line, then checked before we leave.
Work in this trade
Window & door frame sealing FAQs
Why has the sealant around my windows cracked?
Usually age and movement, along with the temperature swings that come with sitting outside. How long it lasts depends on the product used and how much the frame moves, but 15–20 years is a typical working life before flexibility is lost and the sealant cracks away from the frame or the reveal.
Can you seal timber frames as well as uPVC and aluminium?
Yes. Timber needs a paintable or flexible weather-grade sealant rather than standard silicone, so we match the product to the frame material.
Will resealing stop a draught coming through?
In most cases, yes — a failed or missing perimeter seal is one of the most common sources of draughts around older frames.
Do you seal both the inside and outside of a frame?
Where needed, yes — we'll assess whether internal or external sealing (or both) is required to fully close the joint.
Get a price for your frames
Send a couple of photos and rough measurements and we'll quote from those. Or call 07413 240639.