Window & door mastic in Dulwich Village, Greater London

How we handle window mastic in Dulwich Village

Most frames have an outside joint and an inside one. Outside, the mastic keeps rain out; the internal joint closes the gap to the plaster and stops draughts. Either or both can be done. Typical jobs include draughty joints inside around the window and gaps where the sill meets the wall, on composite doors, patio & French doors and timber windows & doors.

London’s Victorian and Edwardian terraces were built with timber sash windows, and many still have them or their replacements. Whatever is in the opening now, the joint between frame and wall is what keeps the weather out.

Each job carries a 12-month guarantee, whatever its size.

When it isn’t the sealant

We’d rather tell you now than do work that will not last, so here’s what sealant can’t put right:

• Worn gaskets, brush seals or a door that has dropped
• Damp coming through the wall itself rather than the frame joint
• Soft or decayed wood in the frame

If in doubt, ring 0345 464 0079 or email us and we’ll say what we think before you book.

Where we work in Dulwich Village

• Timber windows & doors
• uPVC windows
• Aluminium frames
• Patio & French doors
• Composite doors
• Window sills

What we’re called out for in Dulwich Village

Frames are never completely still. A plastic or aluminium frame lengthens in sunshine and shortens as it cools, while the brick or render around it hardly moves. A sealant that cannot keep up eventually tears.

Keep an eye out for any of the following:

• Hard, cracked sealant around windows
• Gaps where the sill meets the wall
• Old mastic that has gone black or come away
• Gaps between the frame and the inside reveal

Schools such as Dulwich Hamlet Junior School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.

Before booking anyone

• What insurance they hold
• What the quote includes, VAT included or not
• Whether the sealant suits the joint
• How the surfaces are prepared before sealing

10 questions to ask before you book

What affects the cost of window mastic

We do not publish a price list, because no two jobs are the same. What we look at:

• Whether the work is at height
• The number and length of the joints
• How many rooms, windows or areas are involved
• Whether old sealant or filler has to be cut out

A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.

Asking for a quote

When you contact us, it’s useful to know:

• Where the job is, and your postcode
• The type of property
• The rough size of the job
• Access, such as stairs, a lift or height

There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or email us.