West Berkshire · England
Longlane Sand Mastic
We cover Longlane for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Draughty sash windows at the surround
- Cement or filler used on old window joints that has cracked
- Mastic dropping out of the joint
Looking after it afterwards
Good habits help new joints last longer. Our tips:
- Make sure water runs off the sill
- Have rotten timber repaired before new mastic goes in
- Look over the window mastic once a year
- Go gently near the mastic when preparing windows
Look at the mastic when you look over the windows. Small cracks are easier to deal with early.
Once mastic starts to crumble, rain gets in. That water can reach the timber frame and the wall so early renewal protects both.
Sand mastic in Longlane
Traditional burnt sand mastic that sits naturally against stone and brick. It suits period and listed homes, where modern sealant can look out of place. We work on timber door frames, brick reveals and period & listed homes, and common reasons people get in touch are mastic that needs renewing before redecorating and gaps between timber frames and stone or brick.
In a village or hamlet like Longlane, 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.
Your job is guaranteed for a year, as with all our work.
- Where
- Longlane (RG18)
- Wider area
- West Berkshire
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Longlane homes and the weather
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Shaw House (about 2.7 miles south-west) are a reminder that the area around Longlane has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
For landlords with property near Newbury Racecourse station, any sash windows need sound mastic to keep draughts and rain out. If you live in an older home near Holy Trinity, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Longlane is about 3 miles north of Thatcham, in West Berkshire. Anywhere in RG18, we can carry out sand mastic at your property. Our area takes in 155 places across West Berkshire. Reading is on our list too, about 13 miles from Longlane.
We work across the RG18 postcode area for sand mastic and the streets around it. If you need sand mastic at a property on Sandy Close, Long Lane and Curridge Piece or anywhere close by, our applicators can take on the job. We also cover the places around Longlane: Curridge (1 mile west), Hermitage (1 mile north-east), Wellhouse (1 mile east), Oare (1 mile north) and Little Hungerford (1 mile north-east). Larger places within reach include Newbury (4 miles south-west), Thatcham (3 miles south), Burghfield Common (10 miles east), Speenhamland (3 miles south-west), Hungerford (10 miles west) and Spencers Wood (14 miles east).
Around Longlane
In Longlane, that means homes and buildings near The Bunk Inn. For rail, the closest station is Newbury Racecourse station, about 3.3 miles south of the centre. Other landmarks nearby include West Berkshire Community Hospital (2.7 miles south) and British Balloon Museum & Library Ltd (3.4 miles south-west). The countryside around Longlane includes Snelsmore Common.
How the job changes by surface
Stone surrounds
Old stone surrounds are often uneven, so the gap isn’t the same all the way round. Sand mastic is shaped by hand to suit.
Brick reveals
Loose mastic comes out and deep gaps are packed before pointing.
DIY versus a professional finish
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Common problems we fix in Longlane
Rain on the window surround works into any crack and pushes it out. Windows facing the weather tend to go first.
The problems people generally mention when they call are:
- Window mastic to renew ahead of painting
- A silicone bead on a sash window that spoils the look
- Mastic round period door frames that has failed
- Weathered mastic on the most exposed windows
For site and facilities teams at buildings such as Curridge Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Comparing quotes
- Whether VAT is included
- How hidden problems are handled
- Who turns up on the day
- Are they insured?
What happens on the day
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, do the work and clear up. It usually takes a few hours per window, depending on the condition of the joints. In a small place like Longlane, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each surround is checked first.
- The joint is raked out and cleaned.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
Preparing for the visit
- Tell us about any previous sealing or DIY attempts
- Mention any leaks or damp you’ve noticed
- Tell us if parking is tricky
Ask for a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work and give you a clear price.
Read more
What else we do in Longlane
Quotes for sand mastic in Longlane
Jobs vary more than people expect. What affects the quote:
- How many rooms, windows or areas are involved
- Any working-time requirements on site
- Any mould that needs treating
- How much old sealant there is and how hard it is to remove
Leaving a failed joint usually makes the job bigger, not smaller, as water and mould keep getting in. If you’re unsure, ring 0345 464 0079 or email us for an honest opinion and a quote.
Helping us quote
Photos help, but a description is a good start. Please mention:
- Access, such as stairs, a lift or height
- What the problem is, such as mould, gaps, leaks or cracking
- How many joints, rooms or windows are involved
- Whether it’s a home or a business
We quote each job on its own, so start by telling us what you need. Simply call 0345 464 0079 or drop us an email and describe the job and send photos if you have them.
Questions from Longlane
Will you come out to Longlane?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
I let a flat near Newbury Racecourse station. Can you help?
Yes, we work for letting agents and landlords. Just call 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear quote.
Do you guarantee sand mastic work?
Our 12-month guarantee applies to all our work.
Where are you based?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
Are you insured?
Yes. Full insurance covers our work.
Does someone need to be in?
For indoor joints, yes, someone needs to let us in. Once we’ve agreed the job, you don’t need to watch us work.
Is it OK to seal over old sealant?
No. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
What does sand mastic cost?
We do not publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
For landlords and businesses
Letting agents often deal with us directly. Tell us the address, the job and how access works and we’ll quote.
If you manage several properties in or around Longlane, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and photos by email help.