West Berkshire · England
Sand Mastic in Crockham Heath
Problem with your window and door surrounds in Crockham Heath? We cut out the old, prepare the joints and apply the right sealant.
- Patchy fillers round a sash window
- Tired mastic found when preparing windows for paint
- Wind and rain getting in round a sash window
About our sand mastic in Crockham Heath
Burnt sand mastic is a traditional material that sits naturally against stone and brick. It suits period and listed homes, where modern sealant can look out of place. We are often asked to deal with weathered mastic on the most exposed windows and cracked mastic round a front door frame, on timber door frames, sash and case windows and period & listed homes.
Outdoor sealant needs dry, clean surfaces, so work on frames around Crockham Heath is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
We stand behind the work with a 12-month guarantee, so you are not left on your own once the job is done.
- Place
- Crockham Heath (RG20)
- Wider area
- West Berkshire
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
DIY versus a professional finish
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 fails, we can still redo it.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
Different surfaces, different methods
Stone surrounds
The stone is treated with care while raking out the old mastic.
Timber door frames
Period doors in stone or brick openings are often pointed with sand mastic. The method is the same as for windows.
Why it’s worth doing now in Crockham Heath
A silicone bead can be quicker, but it can look wrong on a period surround. Sand mastic is the traditional material and finishes neatly against the masonry. Where a wall is exposed, as many are in small places like Crockham Heath, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote.
Why us?
- Domestic, commercial and hotel work
- One-year guarantee on every job
- We leave the area clean and tidy
- We are fully insured
How the visit works
We work through the job in order: protect, prepare, seal, tidy. Typically it takes anything from a few hours to a full day, depending on how many windows. For a village or hamlet like Crockham Heath, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
Preparing for the visit
- Let us know about parking restrictions
- Tell us about access, such as stairs, a lift or high-level joints
- Let us know if you’ve seen damp or leaks
Get a quote
Want a quote for sand mastic? Please phone 0345 464 0079 or email us and tell us about the job. We will explain what we’d do and give you a clear quote before we start.
Related advice
How we quote for sand mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Which sealant suits the joint
- How many areas need sealing
- The amount of work
- Whether the work is at height
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
What we need to know
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Photos by email, if that’s easy
- What the problem is, such as mould, gaps, leaks or cracking
- Whether it’s a home or a business
- Any previous sealing or DIY work
For a quote, phone 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You will have a clear quote before we start.
Common questions in Crockham Heath
Do you cover smaller places like Crockham Heath?
Yes. Crockham Heath is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
I let a flat near Newbury station. Can you help?
Yes, landlords and agents are among the people we work for. Just call 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear quote.
Can I do it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it does not work out, we can redo it.
Can old silicone round a sash window be swapped for sand mastic?
In most cases. We remove the silicone and clean the joint before the sand mastic goes in.
Do you take out the old sealant first?
Yes. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Do I need permission for sand mastic on a listed building?
It’s best to ask your local planning authority first. Like-for-like sand mastic is often the preferred finish but the decision is theirs.
Is the work guaranteed?
All our work has a 12-month guarantee.
Will it make a mess?
Very little: the area around the joints is protected first, and we tidy up before we go.
Crockham Heath homes and the weather
With historic houses such as Benham Park (about 1.8 miles north) nearby, there’s older building stock in the area around Crockham Heath as well as newer homes. In older buildings, 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.
For an older house near a landmark such as Parish Church of St Michael, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Schools such as Enborne C.E. Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Crockham Heath is about 3 miles south-west of Newbury, in West Berkshire. Whether you’re in the middle of Crockham Heath or further out, sand mastic is available for homes and businesses alike. Our area takes in 155 places across West Berkshire, from the larger towns to small villages. We also work in Reading, around 18 miles away.
We work across RG20 for sand mastic and the streets around it. Streets in the area include Church Lane and Church Close, all of which we cover. Nearby, we also carry out sand mastic in Enborne (1 mile north), Hamstead Marshall (1 mile west), Skinners Green (1 mile north-east), Enborne Row (1 mile south-east) and Ball Hill (1 mile south-west). Larger places within reach include Newbury (3 miles north-east), Thatcham (5 miles east), Burghfield Common (14 miles east), Speenhamland (3 miles north-east), Hungerford (6 miles west) and Calcot (15 miles east).
Landmarks near Crockham Heath
Typical jobs here are in homes near Park House School, Hamstead Marshall Park and Craven Arms and the streets around them. The closest station to Crockham Heath is Newbury station, about 2.6 miles north-east of the centre. A little further out are West Berkshire Community Hospital (4 miles north-east) and British Balloon Museum & Library Ltd (2.7 miles north-east). Green spaces nearby include Rack Marsh and Pilot Hill.
Also near Crockham Heath
More services for Crockham Heath
How to look after the new joints
Looking after new joints is easy, and it makes a real difference:
- Ask us before painting near the mastic
- Keep modern sealant off the mastic
- Ask a joiner to look at soft timber first
- Renew mastic before redecorating the windows
Avoid painting over the new mastic, which is the traditional advice. If you are redecorating, ask us first.
Once mastic starts to crumble, rain gets in. That water can reach the timber frame and the wall so early renewal protects both.
Signs you need sand mastic in Crockham Heath
Sand mastic slowly weathers. It dries out, cracks and loses its grip on the stone or timber.
The problems people normally mention when they call are:
- Patchy fillers round a sash window
- Open joints round the window box
- Silicone on a period window that looks wrong
- Draughts and rain around sash boxes
If you let a flat or house near Newbury station, any sash windows need sound mastic to keep draughts and rain out.
Questions to ask before booking
- Whether the sealant suits the joint
- What the quote includes, VAT included or not
- How long to leave it before use
- Whether you can choose the colour