Slough · England
Hedgerley Window Mastic
Mastic around window and door frames, sills and patio doors in Hedgerley, with a 12-month guarantee on every job. Ask us for a quote.
- Leaking joints at the ends of sills
- Whistling draughts around closed windows
- A bead that doesn’t match the frame
How we handle window mastic in Hedgerley
Frames and walls do not move together. Plastic and aluminium frames move with the temperature, while masonry stays fairly still. So the sealant has to stretch and recover, which is why we use a low-modulus product. If you have untidy mastic left by window fitters and a bead that doesn’t match the frame, we can help, on patio & French doors, uPVC windows and timber windows & doors alike.
Homes in small places like Hedgerley often stand in the open, with little to shelter their windows from wind and rain. Exposed frames and sills lose their mastic sooner than sheltered ones.
We guarantee the work for a year. If something is not right with it in that time, tell us and we will put it right.
- Location
- Hedgerley (SL2)
- Wider area
- Slough
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Surface by surface
uPVC windows
Fitters’ mastic on plastic frames is sometimes thin and rushed. It comes out, deep gaps get backing rod and the joint is resealed.
Window sills
Masonry sills can have joints where water gets in, and the joint under the frame can let rain run behind. We seal those with a sealant suited to masonry.
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Clear any debris from frame drain holes
- Don’t aim a pressure washer at the joints
- Clean frames with a soft cloth and soapy water
- Check the mastic once a year
Keep the new mastic undisturbed while it cures, for as long as we advise. Don’t point a pressure washer at the joints.
Draughts get worse, not better. As old mastic keeps shrinking, the gap widens, and a cold room gets colder. A new joint closes it up.
What we are called out for in Hedgerley
A lot of older mastic was never designed to stay flexible. Once it has hardened, the frame’s movement tears it from the wall, and a gap opens along one edge.
If you can see any of these, it’s time to have the joints looked at:
- Draughts coming in around windows and doors
- Rain getting in at the frame or under the sill
- Sealant in the wrong colour for the frame
- Draughty joints inside around the window
For an older house near a landmark such as Parish Church of St Mary the Virgin, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Questions to ask before booking
- How long to leave it before use
- How the joint is cleaned and prepared
- How much experience the applicator has
- What happens if they find a problem under the old sealant
Nearby places to Hedgerley
More services for Hedgerley
Why it’s worth doing now in Hedgerley
Not every sealant suits a window. Decorators’ caulk and bathroom silicone are not designed for outside joints that move. A low-modulus exterior sealant keeps its stretch through hot and cold weather. Older cottages and farmhouses around Hedgerley can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs. Call for a quick quote and we will go through it with you.
Why choose Mr Mastic in Hedgerley
- We’re fully insured
- Rated 4.9 stars on Google
- ARBOMaster approved applicator
- Neat joints and a tidy finish
Take a look at what affects the cost or our reviews.
DIY versus a professional finish
Some sealant jobs are within reach of a careful DIYer, 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.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Hedgerley questions
Can you do window mastic in Hedgerley?
Yes. Our work covers London and the South East, and Hedgerley is part of that. Just ring 0345 464 0079 or drop us an email with a few details of the job.
Can you help a landlord with a rental near Gerrards Cross station?
Yes, landlords and agents are among the people we work for. You can ring 0345 464 0079 or email us with the details for a clear quote.
Do you work on first-floor windows?
Yes, in most cases. We plan safe access before the job.
Will there be a smell?
It depends on the product. Some products have a noticeable smell, others very little.
Are you fully insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
Can you match the sealant to my frames?
Yes, in most cases. Mention the frame colour when you ask for a quote and we’ll use the nearest match.
What should I tell you?
Let us know what needs doing and where, plus photos if you have them. If we need more, we’ll ask.
Are you ARBOMaster approved?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
What happens on the day
Once we are on site, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. After that, the work takes a morning for a couple of windows and a door. In a small place like Hedgerley, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each frame is looked over and we agree which ones need resealing.
- We remove the old mastic and clean the frame edge and wall.
- Where the gap is deep, backing rod goes in first.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- Every joint is tooled smooth and checked before we leave.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- Tell us about any previous sealing or DIY attempts
- Keep children and pets away from the work area
Ask for a quote
We do not publish a price list, as no two jobs are quite the same. Instead, we send you a clear quote for your job. To get started, call 0345 464 0079 or send us an email.
Related advice
Window mastic in Hedgerley: local notes
With historic houses such as Cliveden (about 3.8 miles west) nearby, there’s older building stock in the area around Hedgerley as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Letting a property close to Gerrards Cross station? Then renewing tired window mastic between tenants heads off draught and damp complaints. Managing a site like Farnham Common Junior School? Then the mastic around its windows and doors needs looking after like any other building’s.
Hedgerley is about 3 miles south-east of Beaconsfield, in Slough. Hedgerley gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Across Slough, we cover 31 places, Hedgerley among them. Our Reading page covers work nearby.
Here we cover the SL2 postcode area for window mastic. That includes homes and businesses on Jones Way, Hedgerley Hill and Cottage Park Road. We also cover the places around Hedgerley: Egypt (1 mile south-west), Farnham Common (1 mile south-west), East Burnham (2 miles south-west), Littleworth Corner (2 miles west) and Farnham Royal (2 miles south). We also work in nearby towns such as Slough (4 miles south), Cippenham (4 miles south), Chalvey (5 miles south), Langley (5 miles south-east), Upton (5 miles south) and Burnham (4 miles south-west).
Around Hedgerley
In Hedgerley, that means homes and buildings near Bulstrode Park, The White Horse Public House and Khalsa Secondary Academy and the streets around them. The closest station to Hedgerley is Gerrards Cross station, roughly 2.3 miles north-east. Nearby you will also find Wexham Park Hospital (3 miles south-east). For a walk, there’s Church Wood and Pynesfield Lake.
When it isn’t the sealant
New sealant can’t fix everything, and we’ll tell you before we start. Sealant will not put right:
- Rotten timber, which needs a joiner first
- A failed sealed unit that has misted up
- Penetrating damp from a failed cavity tray or render
If you are not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer before you book.
What we seal
- Composite doors
- Aluminium frames
- uPVC windows
- Patio & French doors
- Window sills
- Timber windows & doors