Greater London · England
Ruislip Gardens Window Mastic
Mastic around window and door frames, sills and patio doors in Ruislip Gardens, with a 12-month guarantee on every job. Ask us for a quote.
- Damp patches on the reveal after heavy rain
- Rushed sealant from a window installation
- Cracked sealant at the sill ends
How the job changes by surface
Patio & French doors
The joints around patio doors run a long way, top, sides and threshold. Most leaks start at the bottom corners, so we pay close attention there.
Timber windows & doors
Wood swells when it’s wet and shrinks when it dries, so the joint must stay flexible. We seal onto sound, dry paintwork or timber.
Window mastic in Ruislip Gardens, done properly
If you can feel air around a shut window, the gap is often at the frame. A new joint stops the air getting through and quietens the whistle on windy days. If the draught is through the window seals instead, we will tell you. We are often asked to deal with untidy mastic left by window fitters and draughts coming in around windows and doors, on uPVC windows, timber windows & doors and aluminium frames.
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, in Ruislip Gardens as anywhere.
Whatever the size of the job, it’s backed by our one-year guarantee.
- Place
- Ruislip Gardens (HA4)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Aftercare tips
How long the joints last depends on use and care. We suggest:
- Check the mastic once a year
- Don’t paint over the silicone
- Keep paint and stain on wooden frames in good order
- Clear any debris from frame drain holes
Most silicone sealants will not take paint, so mention any painting plans before work begins. There are paintable sealants for joints that need it.
Draughts get worse, not better. As the old mastic shrinks further, more air gets through, and heat escapes around the frame. Resealing closes it.
What window mastic looks like in Ruislip Gardens
Historic houses like Ickenham Hall (about 1.3 miles west) are a reminder that the area around Ruislip Gardens has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you live in an older home near Church of St Paul, the joint between an old wall and a newer frame is usually the first place rain gets in. If you look after a building such as Ruislip High School, its window and door frames need their mastic kept sound, just like a home’s.
Ruislip Gardens is about 1 mile south of Ruislip, in Greater London. Anywhere in HA4, we cover window mastic for homes and businesses. We cover 764 towns and villages across Greater London. We also work in London, about 14 miles from Ruislip Gardens.
Work in HA4 is quoted and booked the same way as anywhere else. We cover properties on Bedford Road, Tiptree Road and Hardy Avenue and the roads around them. If you’re just outside Ruislip Gardens, we cover Ruislip Manor (1 mile north), Ruislip (1 mile north), Ickenham (2 miles west), Hillingdon (2 miles south-west) and Newyears Green (3 miles north-west). Further out, we also cover London (14 miles east), City of Westminster (12 miles east), Marylebone (12 miles east), Kensington (10 miles south-east), St Pancras (13 miles east) and Shoreditch (14 miles east).
Near you in Ruislip Gardens
Locally, jobs take us to homes and businesses close to The Arth pub, Church Field Gardens and Ruislip Gardens Primary School, among other places. The closest station to Ruislip Gardens is South Ruislip station, about 0.5 miles south-east. Other landmarks nearby include Hayes Cottage Hospital (2.7 miles south) and The Chimes (3 miles west). Green spaces nearby include Northala Fields and Horse Shoe Bay.
Also near Ruislip Gardens
Also in Ruislip Gardens
Common problems we fix in Ruislip Gardens
A lot of older mastic was never designed to stay flexible. Once it’s rigid, every bit of frame movement pulls at it, leaving a hairline gap down one side.
Signs it’s time to call us include:
- White mastic on grey or black frames
- Rain getting in at the frame or under the sill
- Gaps left after new windows were fitted
- Draughts coming in around windows and doors
If you let a flat or house near South Ruislip station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Comparing quotes
- What insurance they hold
- What product goes in the joint
- Whether VAT is included
- How hidden problems are handled
What happens on the day
There’s no need to move everything out, only the area right around the joints. We protect the rest, and the work takes anything from an hour or two to a full day, depending on how many frames there are in most cases. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. If the building has a concierge, managing agent or access rules, tell us when you book.
- We start by checking each window and door with you.
- We remove the old mastic and clean the frame and the wall.
- We fit backing rod in deep gaps so the sealant is the right depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- We clear up and check every joint is fully closed.
Preparing for the visit
- Plan for the work area to be out of bounds to pets and children
- Where the joints are inside, avoid wetting them before we arrive
- Clear the area around the work
Ask for a quote
Getting a quote is simple: let us know the job and the location, and roughly how big it is. A few photos by email make the job easier to understand.
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What affects the quote in Ruislip Gardens
You’ll get a clear quote before we start. It’s based on:
- The type of sealant required
- How much old sealant there is and how hard it is to remove
- Whether the work is at height
- Any mould that needs treating
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote and we’ll talk you through it.
What to tell us for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Whether it has been sealed before
- The address or postcode of the job
- The problem you’ve noticed
- Whether it’s a home or a business
We do not publish a 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 drop us an email.
Ruislip Gardens: your questions answered
Is parking an issue for window mastic in Ruislip Gardens?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot.
Do you cover Ruislip Gardens for window mastic?
Yes, Ruislip Gardens is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear quote.
Does the work come with a guarantee?
Yes, for 12 months. Keeping drainage clear and checking the joints yearly helps them last.
Do you remove the old sealant?
Yes. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Can you seal the gap between the frame and the plaster indoors?
Yes. Draughts often come through the inside gap too, so sealing both is often worthwhile.
Are you fully insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
Can tenants book the work?
Yes, though it’s best to check with your landlord first. Landlords are often happy for the work to be arranged.
Do I have to be there?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Landlords, agents and businesses in Ruislip Gardens
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Can I do it myself?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.