West Berkshire · England
Sand mastic for sash & case windows in Three Mile Cross, West Berkshire
Professional sand mastic in and around Three Mile Cross, with old sealant always removed completely and a one-year guarantee.
- Tired mastic found when preparing windows for paint
- Old cement repairs round a window that have failed
- Gaps between timber frames and stone or brick
How it works
There’s no need to move everything out before we come, just the space around the work. We protect the rest, and the work takes a few hours per window, depending on the condition of the joints for a typical job. Somewhere as small as Three Mile Cross, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Move anything stored near the joints
- Mention any parking rules near the property
How to get a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. Whenever you’re ready, phone 0345 464 0079 or email us.
Advice
Sand mastic in Three Mile Cross
Burnt sand mastic is a traditional material blends with stone and brick surrounds. It’s a good fit for period properties where a modern sealant bead would stand out. We work on stone surrounds, period & listed homes and tenement windows, and common reasons people get in touch are gaps between timber frames and stone or brick and draughts and rain around sash boxes.
In a village or hamlet like Three Mile Cross, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these do not always suit modern silicone, so the sealant has to be chosen to suit the building.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we’ll put it right.
- Location
- Three Mile Cross (RG7)
- Wider area
- West Berkshire
- Guarantee
- A year, on every job
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
When to call us in Three Mile Cross
Decorating can disturb tired mastic. It’s often found when windows are being prepared for paint, which is a good time to renew it.
The most common problems we see are:
- Tired mastic found when preparing windows for paint
- Cement or filler used on old window joints that has cracked
- Draughts and rain around sash boxes
- A silicone bead on a sash window that spoils the look
For landlords with property near Reading Green Park station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Questions to ask before booking
- Which colour the sealant will be
- Is VAT in the price?
- What the cure time is
- What happens if the job turns out different
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Get any rot dealt with first
- Do not paint over the new mastic
- Ask the planning authority about consent for listed or conservation-area homes
- Don’t run silicone over sand mastic
Keep gutters and sills clear so water runs away from the surround. Constant wetting wears the mastic faster.
Once mastic starts to crumble, rain gets in. That water can reach the timber frame and the wall, so renewing it early is worth it.
Also near Three Mile Cross
Other services in Three Mile Cross
DIY sealant or a professional job?
A DIY attempt does not rule out a professional job. We cut it out and start again.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Why act early in Three Mile Cross
A silicone bead can be quicker, but it can look wrong on a period surround. Sand mastic suits the building and blends with the stone or brick. Where a wall is exposed, as many are in small places like Three Mile Cross, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Combining jobs into one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
Why Three Mile Cross clients choose us
- An ARBOMaster approved applicator
- 180+ five-star Google reviews
- Anti-fungal silicone where joints get wet
- Tidy, careful work
Read what affects the cost and customer reviews.
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Housing providers, facilities teams and property managers book us too in Three Mile Cross and across West Berkshire. Several sites can be quoted together.
Different surfaces, different methods
Tenement and terrace windows
Windows above ground floor need the right access. Tell us the height and we will confirm what’s needed.
Sash and case windows
Most of our sand mastic work is on sash windows. Each joint round the box is raked out and renewed.
Frames and glazing around Three Mile Cross
With historic houses such as Stratfield Saye House (about 4 miles south) nearby, there’s older building stock in the area around Three Mile Cross 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, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Homes close to St Michael and All Angels include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Three Mile Cross is about 3 miles south of Reading, in West Berkshire. If you need sand mastic in Three Mile Cross, please phone 0345 464 0079 or drop us an email for a quick quote. We are based in Crawley and cover West Berkshire. 155 places in West Berkshire are on our list.
Every address in RG7 is covered for sand mastic. We cover properties on Dairy Grove, Basingstoke Road and Buttermilk Grove. We also cover the places around Three Mile Cross: Ryeish Green (1 mile south-east), Great Lea Common (1 mile north-west), Whitley Wood (1 mile north-east), Shinfield (1 mile east) and Green Park (2 miles north-west). Larger places within reach include Newbury (15 miles west), Thatcham (12 miles west), Burghfield Common (4 miles west), Speenhamland (15 miles west), Calcot (4 miles north-west) and Shaw (15 miles west).
Landmarks near Three Mile Cross
Locally, jobs take us to homes and businesses close to The Farriers Arms, Pearman's Copse and Ryeish Green School. For rail, the closest station is Reading Green Park station, about 2 miles north-west of the centre. Nearby you will also find Beaumys Castle (2.1 miles south) and The Oracle (3.3 miles north). Open spaces near Three Mile Cross include Longwater and Fobney Island Wetland Reserve.
FAQs for Three Mile Cross
Do you work for landlords with property near Reading Green Park station?
Yes, we work for letting agents and landlords. You can ring 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before work begins.
Do you cover Three Mile Cross for sand mastic?
Yes, Three Mile Cross is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or drop us an email and tell us what needs doing.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us and we are fully insured.
What should I tell you?
A short description and the location, plus pictures if you have them. If we need more, we will ask.
How do I get a quote for sand mastic in Three Mile Cross?
It depends on the job, so we quote each one individually. For a quick quote, ring 0345 464 0079 or email us with a short description of the job.
Can I do 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.
Can new sealant go over the old?
No. Fresh sealant does not stick to old sealant, and it traps any mould or water underneath. It all has to come out first.
Where are you based?
We work from Crawley. Our applicators cover Three Mile Cross.