Wokingham · England
Sand Mastic in Finchampstead
We cover Finchampstead for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly and a one-year guarantee.
- Cement or filler used on old window joints that has cracked
- Mastic that needs renewing before redecorating
- Crumbling sand mastic round a window
How we handle sand mastic in Finchampstead
Sand mastic suits most period window surrounds. Newer frames normally get a flexible sealant instead, and we will talk through which suits your home. Typical jobs include mastic worn away on windows facing the weather and window mastic to renew ahead of painting, across period & listed homes, timber door frames and stone surrounds.
Homes in small places like Finchampstead often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
Big or small, it’s backed by our one-year guarantee.
- Place
- Finchampstead (RG40)
- Region
- Wokingham
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
DIY sealant or a professional job?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
Also near Finchampstead
More services for Finchampstead
For landlords and businesses
Hotels need rooms back in use, so we plan the work room by room. We’ve worked in hotels as well as homes and businesses.
If you manage several properties in or around Finchampstead, several properties can be quoted together. Just tell us the addresses and what each one needs, and photos by email help.
What affects the quote in Finchampstead
We quote each job individually. This is what makes a difference:
- How easy the joints are to reach
- When we can work, for business premises
- Which sealant suits the joint
- The size of the job
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. You will know the price before we begin.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Where the property is
- Access, such as stairs, a lift or height
- Whether it’s a home or a business
- How many joints, rooms or windows are involved
To get a quote, ring 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before we start.
How to look after the new joints
After the cure time, these simple habits help:
- Avoid patching sand mastic with silicone
- Do not paint over the new mastic
- Ask a joiner to look at soft timber first
- Look over the window mastic once a year
Don’t run silicone over the new mastic. If anything cracks, get it looked at before trying a quick fix.
Crumbling mastic lets rain into the joint. It can soak into the frame and the surrounding masonry, so renewing it early is worth it.
When to call us in Finchampstead
Timber frames move with the seasons. That movement opens up the mastic joint over time.
These are the problems we’re asked about most:
- Draughty sash windows at the surround
- Cracked mastic round a front door frame
- Silicone on a period window that looks wrong
- Failed mastic on an exposed elevation
If you live in an older home near Church of St James, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Questions to ask before you book
- What happens if the job turns out different
- When the joint can take water or movement
- Who does the work, and how experienced they are
- Whether VAT is included
The process
On the day, we start by going over the job with you, so there are no surprises. Surfaces next to the work are protected before work begins. Most jobs take anything from a few hours to a full day, depending on how many windows. Somewhere as small as Finchampstead, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
How to prepare
- Clear the area around the work
- Tell us about any water getting in
- Mention any sign-in or site rules at work premises
How to get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.
Related advice
When something else is needed
We will not take on work that will not last, so these are the limits:
- Damaged stone surrounds
- Cracked or broken glass
- Sashes that rattle, stick or will not open
Not sure which it is? You can ring 0345 464 0079 or email us and we’ll tell you honestly before booking.
Where we work in Finchampstead
- Timber door frames
- Period & listed homes
- Tenement windows
- Stone surrounds
- Brick reveals
- Sash and case windows
What sand mastic looks like in Finchampstead
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 Finchampstead CofE VA Primary School? Then the mastic around its windows and doors needs looking after like any other building’s. If you let a flat or house near Crowthorne station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Finchampstead is about 2 miles north-west of Yateley, in Wokingham. Our applicators cover sand mastic for householders, landlords and businesses in Finchampstead and nearby. Finchampstead is one of 35 places in Wokingham we cover. Our Reading page covers work nearby, about 8 miles away.
Here we cover the RG40 postcode area for sand mastic. Local streets include The Village, Manor Barns Lane and Longwater Lane, all of which we cover. If you are just outside Finchampstead, we cover Eversley Centre (1 mile south-west), Eversley Cross (1 mile south), California (1 mile north-west), Eversley (1 mile west) and Lower Common (2 miles west). Larger places within reach include Reading (8 miles north-west), Wokingham (3 miles north), Woodley (7 miles north), Earley (6 miles north-west), Crowthorne (3 miles east) and Lower Earley (5 miles north-west).
Around Finchampstead
Typical jobs here are in homes near The Queen's Oak pub, Shepperlands Farm Nature Reserve and Yateley School and the streets around them. The closest station to Finchampstead is Crowthorne station, roughly 1.7 miles east. Well-known places in the area include Pinewood Hospital (3.2 miles north-east). Not far away are Wildmoor Heath and Horseshoe Lake.
Finchampstead questions
I let a flat near Crowthorne station. Can you help?
Yes, we work for letting agents and landlords. You can call 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.
Do you cover Finchampstead for sand mastic?
Yes, Finchampstead is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job.
Do you take out the old sealant first?
Always. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Is sand mastic better than silicone for my windows?
Sand mastic normally suits period timber windows best. Modern frames normally suit a flexible sealant.
Do you offer different sealant colours?
Most of the time, yes. We’ll explain which colours are available.
Can new sealant go over the old?
No, because it fails. The old sealant always comes out first, so the new sealant bonds properly.
What do you put in the joint?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we will tell you what we’re using.
Is there any odour?
Possibly a little. It fades as the sealant cures, and ventilation helps.