Hampshire · England
Sand Mastic in Eastrop
Specialist sand mastic for Eastrop: careful preparation, the right product and tidy work. Call for a quick quote.
- Tired mastic found when preparing windows for paint
- Cement or filler used on old window joints that has cracked
- Gaps where the frame meets the masonry
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
If you’ve already had a go yourself, that is fine. We cut it out and start again.
Sand mastic in Eastrop
For a listed home or one in a conservation area, ask your local planning authority whether consent is needed for work to windows. Like-for-like sand mastic is often the preferred finish. Common call-outs are for gaps between timber frames and stone or brick and crumbling sand mastic round a window, across timber door frames, sash and case windows and period & listed homes.
Homes around Eastrop range from older properties to newer houses, and their windows range just as widely. Each frame material needs the right sealant against the right wall.
All of our work is guaranteed for twelve months, in Eastrop and everywhere else we cover.
- Location
- Eastrop (RG21, RG24)
- Region
- Hampshire
- Cover
- A year, on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
The process
Before we leave, we go over the finished joints with you and explain the cure time. The work normally takes anything from a few hours to a full day, depending on how many windows, depending on how much there is to do. For a job in Eastrop, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- First, we look at the surrounds with you and agree what needs doing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic isn’t too thick.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Before we arrive
- Mention any parking rules near the property
- For business premises, tell us about site rules or sign-in
- For indoor joints, keep the area dry beforehand if you can
Get a quote
To get a quote, phone 0345 464 0079 or drop us an email with the location and a short description of the problem. We will give you a clear price before any work starts.
Read more
Surface by surface
Brick reveals
An open joint at a brick reveal lets weather in. New mastic seals the gap.
Tenement and terrace windows
Where a building is shared, window work may involve neighbours, so check who is responsible first.
When it is not the sealant
New sealant cannot fix everything, and we’ll tell you before we start. Sealant will not put right:
- Cracked or broken glass
- Whether work needs listed building consent
- Decayed frames that need repair
Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly.
Joints and surfaces we work on
- Period & listed homes
- Stone surrounds
- Sash and case windows
- Timber door frames
- Tenement windows
- Brick reveals
What affects the quote in Eastrop
Your quote is based on your job. We take into account:
- Access and height
- The product the joint needs
- How many areas need sealing
- When we can work, for business premises
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we will explain the quote if you ask.
Helping us quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- If it’s domestic, commercial or a hotel
- The address or postcode of the job
- How many joints, rooms or windows are involved
- The problem you’ve noticed
Want a quote for sand mastic? Please ring 0345 464 0079 or email us with a few details. We’ll explain what we’d do and give you a clear quote before any work starts.
For landlords and businesses
In hotels, rooms out of use cost money, so the work can be planned room by room. We’ve worked in hotels as well as homes and businesses.
We also work for property managers and facilities teams in Eastrop and across Hampshire. We can quote a run of properties together, and we’re fully insured for the work.
Questions from Eastrop
Do you work for landlords with property near Basingstoke station?
Yes, landlords and agents are among the people we work for. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we will send you a clear quote.
Is Eastrop in your area for sand mastic?
Yes, Eastrop is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or drop us an email with a few details of the job.
Where are you based?
We are based in Crawley, and we cover South East England, London and all of Scotland.
Do I have to be there?
It depends on the job. Inside work needs someone to give us access, and for outside work we’ll agree access with you when we book.
Is consent needed for window work on a listed home?
Speak to your local planning authority before work starts. Like-for-like sand mastic is often the preferred finish, but they decide.
When will the new mastic be hard?
It forms a skin fairly soon, then hardens over a longer period. The weather and joint depth both affect it.
Can you replace silicone on a period window with sand mastic?
Usually, yes. Once the silicone is out and the joint prepared we point it with sand mastic.
Is sand mastic better than silicone for my windows?
It depends on the window. On many period windows, sand mastic looks right and suits the building, while modern frames normally get a flexible sealant.
Places near Eastrop
More services for Eastrop
Do you need sand mastic in Eastrop?
Decorating can disturb tired mastic. It’s often found when windows are being prepared for paint.
The problems people normally mention when they call are:
- Weathered mastic on the most exposed windows
- Draughts and rain around sash boxes
- Mastic round period door frames that has failed
- Gaps between timber frames and stone or brick
For landlords with property near Basingstoke station, any sash windows need sound mastic to keep draughts and rain out.
Questions to ask before booking
- Whether they seal over old material or remove it
- What happens if they find a problem under the old sealant
- What insurance they hold
- How the surfaces are prepared before sealing
Eastrop homes and the weather
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like The Vyne (about 2.9 miles north) are a reminder that the area around Eastrop 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.
In the older streets around Church of St Mary, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. For site and facilities teams at buildings such as The Costello School, larger buildings have plenty of frames, and the mastic around each one ages.
Eastrop is about 1 mile east of Basingstoke, in Hampshire. Eastrop gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. 683 places in Hampshire are on our list, large and small. There’s also a page for Reading, roughly 13 miles from Eastrop.
We cover every part of RG21 and RG24 for sand mastic and the streets around it. If you need sand mastic at a property on New Road, Vyne Road and Goat Lane or anywhere close by, we can help. With the A3010 close by, Eastrop is simple for us to get to. Close by, we work in Oakridge (1 mile north-west), Viables (1 mile south), Lychpit (1 mile east), Popley (1 mile north) and Old Basing (2 miles east). Further out, we also cover Farnborough (14 miles east), Fleet (11 miles east), Aldershot (14 miles east), Alton (9 miles south-east), Yateley (12 miles north-east) and Tadley (7 miles north-west).
Landmarks near Eastrop
Typical jobs here are in homes near Fairfields Primary School, Eastrop Park and The Angel pub, among other places. Eastrop has its own railway station: Basingstoke station. Other landmarks nearby include Festival Place (less than half a mile west) and Basingstoke and North Hampshire Hospital (1.6 miles north-west). Not far away are Farleigh Hill and Daneshill Park Woods.