Wokingham · England
Sand Mastic in Winnersh
Problem with your window and door surrounds in Winnersh? We cut out the old, prepare the joints and apply the right sealant.
- Window mastic to renew ahead of painting
- Gaps round a timber door in stone or brick
- Patchy fillers round a sash window
How to look after the new joints
After the cure time, these simple habits help:
- Ask us before painting near the mastic
- Sort the mastic before the decorators arrive
- Inspect the joints round the windows every year or so
- Check with your local planning authority if your home is listed
Check the mastic when you check the paintwork. Small cracks are easier to deal with early.
It’s best to renew mastic before painting the windows. Painting over failed mastic hides the problem for a while.
How we handle sand mastic in Winnersh
Fresh sand mastic forms a skin quite soon, but it takes longer to harden fully. Traditional guidance is not to paint over it and we’ll advise if you’re redecorating. Typical jobs include gaps between timber frames and stone or brick and mastic dropping out of the joint, on brick reveals, sash and case windows and timber door frames.
Houses in smaller places like Winnersh can stand more in the open than those in a built-up town. That’s hard on the mastic around frames and sills.
Our work is backed for twelve months.
- Place
- Winnersh (RG41, RG10)
- Wider area
- Wokingham
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Other services in Winnersh
Questions from Winnersh
Is Winnersh within the area you cover?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
I let a flat near Winnersh station. Can you help?
Yes, we work for landlords and agents. You can ring 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Are you insured?
Yes. Full insurance covers our work.
Can you match the sealant colour?
In most cases you can choose. We will tell you which colours the right product comes in and agree one before any work starts.
Is it messy?
Not at all. The area is protected while we work and cleaned up afterwards.
What guarantee comes with the work?
Our 12-month guarantee applies to all our work.
Can I paint the new mastic?
It’s traditionally left unpainted, which is what traditional guidance recommends. Talk to us before any painting near it.
What’s sand mastic made of?
It’s sand mixed with a linseed-oil-based binder, used between timber frames and stone or brick.
Sand mastic in Winnersh: local notes
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Rented homes near Winnersh station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. If you live in an older home near St Mary the Virgin, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Winnersh is about 2 miles south of Woodley, in Wokingham. If you need sand mastic in Winnersh, please call 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Wokingham, Winnersh included. Winnersh is one of 35 towns and villages in Wokingham where we work.
Our applicators cover all of the RG41 and RG10 postcode area for sand mastic. Local streets include Reading Road, Westbrook Court and Bathurst Road, and we cover them all. You’ll find Winnersh on the B3030, which makes it straightforward to reach with everything needed for sand mastic. If you are just outside Winnersh, we cover Sindlesham (1 mile south), Emmbrook (1 mile south-east), Woosehill (2 miles south-east), Woodley (2 miles north) and Wokingham (2 miles south-east). Larger places within reach include Reading (4 miles west), Crowthorne (5 miles south-east), Newtown (3 miles north-west), Coley Park (5 miles west), Twyford (3 miles north) and Charvil (3 miles north). Winnersh is one of the larger places we cover in Wokingham.
Near you in Winnersh
In Winnersh, that means homes and buildings near The Poachers pub, Maiden Erlegh Local Nature Reserve and Winnersh Primary School, among other places. There’s a railway station in Winnersh itself: Winnersh station. A little further out are Berkshire Library & Museum of Freemasonry (0.6 miles south-west) and Wokingham Hospital (2.1 miles south-east). For a walk, there’s Lavells Lake and South Lake.
Why act early in Winnersh
Not every filler suits an old window surround. Sand mastic matches what was there and that can be important for listed homes. In an older home around Winnersh, damp from a failed joint can get into timber and plaster, and that is a much bigger job than renewing the sealant.
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part.
What you get with us
- We never seal over old sealant
- Homes, businesses and hotels
- More than 20 years in sealant work
- ARBOMaster approved applicator
Take a look at how sealant jobs are priced or our reviews.
What we’re called out for in Winnersh
Age is the main cause. Sand mastic is a maintenance item like any pointing and how long it lasts depends on the weather it faces.
These are the problems we are asked about most:
- Crumbling sand mastic round a window
- A silicone bead on a sash window that spoils the look
- Wind and rain getting in round a sash window
- Gaps between timber frames and stone or brick
Schools such as The Forest School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
What to look for in a quote
- What the quote includes, VAT included or not
- Which colour the sealant will be
- How the surfaces are prepared before sealing
- What the cure time is
What we can’t put right
New sealant cannot fix everything, and we’d rather say so up front. It won’t solve:
- Sash cords, weights and draught-proofing of the sashes
- Planning or listed building consent (your local planning authority decides)
- Cracked or broken glass
If you’re not sure, just call 0345 464 0079 or email us and we will give you a straight answer before booking.
Where we work in Winnersh
- Sash and case windows
- Timber door frames
- Brick reveals
- Stone surrounds
- Period & listed homes
- Tenement windows
How the visit works
At the end, we look at the finished work together and tell you how long to leave it. The visit itself usually takes a few hours for a single window, longer for several, depending on how much there is to do. In a smaller place like Winnersh, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- We start by checking each surround and agreeing the joints to renew.
- The loose and crumbling mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- We dress the surface so it sits neatly against the masonry.
Before we arrive
- Where the joints are inside, avoid wetting them before we arrive
- Clear items away from the joints we are working on
- Mention any parking rules near the property
Ask for a quote
Asking for a quote is easy: let us know the job and the location. Photos by email help us understand the job, and we will take it from there.
Read more
Quotes for sand mastic in Winnersh
Every job gets its own quote. These are the things that affect it:
- Working hours on commercial sites
- The size of the job
- Access and height
- Whether old sealant or filler has to be cut out
Homes and businesses are quoted the same way: the amount of work, the access and the products needed. Call for a quick quote and we’ll go through it with you.
Helping us quote
To help us quote quickly, please include:
- How many joints, rooms or windows are involved
- The problem you’ve noticed
- Any previous sealing or DIY work
- A few pictures by email, if you can
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work before giving you a price.
What the job involves on each surface
Stone surrounds
Sand mastic sits naturally against stone. It finishes to look like part of the surround.
Period and listed homes
Materials matter on listed and conservation-area homes. Like-for-like sand mastic is normally favoured.