Hampshire · England
Sand mastic for sash & case windows in North Warnborough, Hampshire
Sand mastic for North Warnborough, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Window mastic to renew ahead of painting
- Patchy fillers round a sash window
- Crumbling sand mastic round a window
Why act early in North Warnborough
Silicone might seem the quicker option, but it can look wrong on a period surround. Sand mastic is the traditional material and finishes neatly against the masonry. In a small place like North Warnborough, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
Why North Warnborough customers choose us
- Old sealant always removed completely
- Over 20 years’ experience
- ARBOMaster approved applicator
- Homes, businesses and hotels
Take a look at our cost guide and our reviews.
Sand mastic for homes and businesses in North Warnborough
Old sand mastic cracks, crumbles and falls out over time, leaving gaps round the window. We rake it out and renew it and tidies the surround. We are often asked to deal with old cement repairs round a window that have failed and mastic worn away on windows facing the weather, across brick reveals, timber door frames and tenement windows.
Somewhere as small as North Warnborough, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
There’s a 12-month guarantee on every job.
- Where
- North Warnborough (RG29)
- Region
- Hampshire
- Guarantee
- A year, on every job
- Quotes
- A clear price before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Places near North Warnborough
Also in North Warnborough
Common questions in North Warnborough
Will you come out to North Warnborough?
Yes, North Warnborough is covered. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Is North Warnborough in your area for sand mastic?
Yes, North Warnborough is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job.
Do you remove the old sealant?
Yes. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Do you guarantee sand mastic work?
Our 12-month guarantee covers every job.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status, and we’re fully insured.
Can tenants book the work?
Yes. Ask your landlord first, and we can send them the quote if that helps.
Can you quote for more than one area?
Yes, we can. Several rooms, windows or areas can go on one quote.
What do you need from me for a quote?
A short description and the location, with photos by email if possible. If we need more, we will ask.
What we’re called out for in North Warnborough
Age is the main cause. Even well-laid mastic needs renewing in time and how long it lasts depends on the weather it faces.
It’s worth asking for a quote if you see:
- Mastic that needs renewing before redecorating
- Failed mastic on an exposed elevation
- Patchy fillers round a sash window
- Wind and rain getting in round a sash window
For an older house near a landmark such as All Saints Church, the joint between an old wall and a newer frame is usually the first place rain gets in.
Comparing quotes
- Whether all the old sealant comes out first
- How the joint is cleaned and prepared
- Who turns up on the day
- Is VAT in the price?
North Warnborough homes and the weather
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For site and facilities teams at buildings such as Robert May's School, larger buildings have plenty of frames, and the mastic around each one ages. Letting a property close to Hook station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
North Warnborough is about 5 miles west of Fleet, in Hampshire. If you need sand mastic in North Warnborough, please call 0345 464 0079 or send us an email for a quick quote. We’re based in Crawley and cover Hampshire. North Warnborough is one of 683 towns and villages in Hampshire we cover. Reading is on our list too, about 13 miles from North Warnborough.
All of RG29 is within our area for sand mastic, from the main roads to the quietest streets. Sand mastic is available to properties on Whitewater Road, Queens Road and New Road. Nearby, we also carry out sand mastic in Odiham (1 mile south-east), Warnborough Green (1 mile north-west), Greywell (1 mile west), Broad Oak (1 mile east) and Hook Common (2 miles north-west). Larger places within reach include Basingstoke (6 miles west), Farnborough (8 miles east), Fleet (5 miles east), Aldershot (8 miles east), Alton (8 miles south) and Yateley (8 miles north-east).
Around North Warnborough
Around North Warnborough, our work takes us to homes and buildings near The Anchor Inn and Mayhill Junior School. North Warnborough’s nearest station is Hook station, roughly 1.5 miles north. A little further out are Odiham Castle (0.5 miles north-west) and West Green House Agricultural Museum (3.1 miles north). The countryside around North Warnborough includes Tundry Hill and The Mill Field.
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll quote.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
What happens on the day
On the day, we look over the joints with you first, so you know exactly what we’re doing. We protect the surfaces around the joints before any work begins. The work usually takes anything from a few hours to a full day, depending on how many windows. In a small place like North Warnborough, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, we look at the surrounds with you and agree what needs doing.
- We rake out the old mastic and clean the joint.
- We pack any deep gaps so the mastic sits at the right depth.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Before we arrive
- Let us know about parking restrictions
- Keep pets and children clear of the area while we work
- Let us know about stairs, lifts or work at height
Getting a quote
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work before giving you a price.
Advice
How the job changes by surface
Timber door frames
Door frames get knocked and soaked, so their mastic can fail sooner. We rake it out and renew it.
Brick reveals
Loose mastic comes out and deep gaps are packed before the new mastic goes in.
When something else is needed
Sealant is not the answer to every problem, and we will tell you before any work starts. It won’t solve:
- Cracked or broken glass
- Sash cords, weights and draught-proofing of the sashes
- Crumbling stone or brickwork round the window
If in doubt, ring 0345 464 0079 or drop us an email and we will say what we think.
What we seal
- Timber door frames
- Brick reveals
- Stone surrounds
- Tenement windows
- Sash and case windows
- Period & listed homes