Wokingham · England
Sand mastic for sash & case windows in Coley Park, Wokingham
Window and door surrounds in Coley Park need attention? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Draughty sash windows at the surround
- Modern sealant on a period surround
- Tired mastic found when preparing windows for paint
Sand mastic in Coley Park, done properly
Old sand mastic cracks, crumbles and falls out over time, leaving gaps round the window. We rake it out and renew it and tidies the surround. If you have wind and rain getting in round a sash window and crumbling sand mastic round a window, we can help, on period & listed homes, sash and case windows and stone surrounds alike.
In smaller places like Coley Park, homes range from older cottages to newer houses, with windows to match: timber, uPVC and aluminium. The right sealant depends on the frame and on what it sits in.
Big or small, you get the same 12-month guarantee.
- Where
- Coley Park (RG1, RG30, RG2)
- Region
- Wokingham
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Different surfaces, different methods
Stone surrounds
Stone openings are rarely perfectly straight, so the gap isn’t the same all the way round. Sand mastic is shaped by hand to suit.
Tenement and terrace windows
Tenements and terraces often have many sash windows with ageing mastic. We can do one window or several.
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Coley Park: your questions answered
Do you cover Coley Park for sand mastic?
Yes. We work across London and the South East, and Coley Park is part of that. Just ring 0345 464 0079 or email us with a few details of the job, and we’ll send you a clear quote.
Do you work for landlords with property near Reading West station?
Yes, landlords and agents are among the people we work for. Just ring 0345 464 0079 or email us with the address and what needs doing, and we’ll send you a clear quote.
What guarantee comes with the work?
Our 12-month guarantee applies on every job.
Which is right for my windows, sand mastic or modern sealant?
We will help you decide. Sand mastic suits many period homes, and modern sealants suit newer frames.
Is it worth trying it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. If it doesn’t work out, we can redo it.
What should I tell you?
Let us know what needs doing and where. If we need more, we’ll ask.
Will the old sealant be removed?
Yes, every time. New sealant will not bond properly to old, so any old material comes out before anything new goes in.
Do I have to be there?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
What affects the cost of sand mastic
The price is agreed before any work begins. It’s based on:
- How many areas need sealing
- Access and height
- Mould in or behind the old joints
- Any working-time requirements on site
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
Helping us quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- The problem you’ve noticed
- Access, such as stairs, a lift or height
- A few photos by email, if you can
- Roughly how big the job is
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
Why it’s worth doing now in Coley Park
Draughts round a sash window aren’t always the sashes. Open mastic joints round the box can let air in and new mastic seals them. In a smaller place like Coley Park, wherever a wall is exposed, a failed outside joint is a real source of damp. Inside, a split seal lets water into floors and panels just as it would anywhere.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we’ll go through it with you.
What you get with us
- Full insurance on every job
- Over 20 years’ experience
- Tidy, careful work
- Arbo and Everbuild products
Read our cost guide and what customers say.
Also near Coley Park
What else we do in Coley Park
What we can’t put right
Some problems need a builder, plumber or other trade rather than us:
- Masonry that needs repairing
- Decayed frames that need repair
- Sashes that need overhauling
Not sure which it is? You can phone 0345 464 0079 or email us and we will tell you honestly.
What we seal
- Sash and case windows
- Stone surrounds
- Brick reveals
- Tenement windows
- Period & listed homes
- Timber door frames
What happens on the day
We work through the job in order: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours per window, depending on the condition of the joints, and the area is left clean. A visit to Coley Park is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We start by checking each surround and agreeing the joints to renew.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic is not too thick.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The mastic is finished to sit tidily against the stone or brick.
How to prepare
- For business premises, tell us about site rules or sign-in
- Try not to wet indoor joints just before the visit
- Tell us about access, such as stairs, a lift or high-level joints
Getting a quote
Every job is quoted individually. Just ring 0345 464 0079 or email us with the details, and photos are welcome.
Advice
Do you need sand mastic in Coley Park?
Previous repairs in cement or silicone often trap water or crack away. They don’t move with the timber, and they usually need raking out.
People normally contact us when they notice one of these:
- Draughts and rain around sash boxes
- Crumbling sand mastic round a window
- Patchy fillers round a sash window
- Tired mastic found when preparing windows for paint
Homes close to All Nations Christian Centre include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Questions to ask before you book
- How the colour is chosen
- Who does the work, and how experienced they are
- What insurance they hold
- Is VAT in the price?
Windows and doors in Coley Park
Historic houses like Mapledurham House (about 3.5 miles north-west) are a reminder that the area around Coley Park has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. 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.
Managing a site like St Mary & All Saints Church of England Primary School? Then the mastic around its windows and doors needs looking after like any other building’s. Rented homes near Reading West station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
Coley Park is about 1 mile south-west of Reading, in Wokingham. Wherever you are in the RG1 postcode area, we can carry out sand mastic at your property. Our Wokingham coverage runs to 35 places, Coley Park among them.
Every address in RG1, RG30 and RG2 is covered for sand mastic, from the main roads to the quietest streets. You will find streets such as Hay Road, Shaw Road and Field Road. Coley Park is on the A4, which makes it straightforward to reach with everything needed for sand mastic. Nearby, we also carry out sand mastic in Reading (1 mile north-east), West Reading (1 mile north-west), Green Park (1 mile south), Whitley (2 miles south-east) and Newtown (2 miles north-east). Larger places within reach include Wokingham (6 miles east), Woodley (4 miles east), Crowthorne (10 miles south-east), Lower Earley (3 miles south-east), Winnersh (5 miles east) and Woosehill (6 miles south-east).
Near you in Coley Park
Locally, jobs take us to homes and businesses close to The Foresters Arms, Eldon Square and The WREN School. Other local landmarks include Elvian School (0.6 miles west) and University of Reading library (1.8 miles east). Coley Park’s nearest station is Reading West station, about 0.7 miles north. A little further out are Battle Hospital (1 mile north-west) and Broad Street Mall (0.8 miles north-east). Not far away are Sonning Hill and South Lake.