Hampshire · England
Sand mastic for sash & case windows in Monkwood, Hampshire
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Monkwood, with a 12-month guarantee on every job. Call for a quick quote.
- Wind and rain getting in round a sash window
- Gaps round a timber door in stone or brick
- Modern sealant on a period surround
Monkwood questions
Is Monkwood in your area for sand mastic?
Yes. We work across London and the South East, and Monkwood is part of that. Just ring 0345 464 0079 or email us with a few details of the job.
Is sand mastic in Monkwood guaranteed?
Every job comes with our one-year guarantee, wherever it is. We’re fully insured, and an ARBOMaster approved applicator.
I rent my home. Can I book you?
Yes. Ask your landlord first, and we can send them the quote if that helps.
Which is right for my windows, sand mastic or modern sealant?
We will talk it through with you. Sand mastic suits many period homes and newer frames suit modern sealant.
What do you need from me for a quote?
A short description and the location, with photos by email if possible. We will ask anything else we need to know.
When will the new mastic be hard?
It takes a while. The skin forms first, and the full set comes later and we’ll give you an idea for your job.
Do I have to be there?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Is it possible to paint over sand mastic?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we’ll talk you through it.
How we handle sand mastic in Monkwood
Old sand mastic cracks, crumbles and falls out over time and gaps open up round the frame. Renewing it closes the gap so the surround looks right again. If you are dealing with modern sealant on a period surround and mastic round period door frames that has failed, we can put it right, on tenement windows, timber door frames and stone surrounds alike.
In a village or hamlet like Monkwood, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
Big or small, it’s backed by our one-year guarantee.
- Place
- Monkwood (SO24)
- Region
- Hampshire
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Sand mastic in Monkwood: local notes
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. Historic houses like Hinton Ampner House (about 4.8 miles west) are a reminder that the area around Monkwood 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.
If you live in an older home near Monkwood Mission Church, the joint between an old wall and a newer frame is generally the first place rain gets in.
Monkwood is about 6 miles south-west of Alton, in Hampshire. Whether you’re in the middle of Monkwood or further out, sand mastic is available for homes and businesses alike. Monkwood is one of 683 towns and villages in Hampshire we cover. There’s also a page for Southampton, roughly 18 miles from Monkwood.
We cover every part of SO24 for sand mastic. Local streets include Hill Farm Road, Flint Fields and Soame's Lane, all of which we cover. Neighbouring places we cover for sand mastic include Charlwood (1 mile north-east), West Tisted (1 mile south-west), Gilbert Street (1 mile north-west), Kitwood (2 miles north) and Ropley (2 miles north-west). We also work in nearby towns such as Basingstoke (14 miles north), Winchester (12 miles west), Havant (15 miles south), Eastleigh (15 miles south-west), Horndean (11 miles south) and Alton (6 miles north-east).
Near you in Monkwood
Well-known places in the area include Alton Community Hospital (5.5 miles north-east). Green spaces nearby include Red Hill and Shutts Copse.
What happens on the day
When we get to you, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take a few hours per window, depending on the condition of the joints. Somewhere as small as Monkwood, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We look at the surrounds with you and agree the joints to renew.
- 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.
Getting ready for the visit
- On commercial sites, let us know about site rules
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about any water getting in
How to get a quote
Asking for a quote is easy: let us know what needs doing and where and its rough size. Photos by email help us understand the job, and we’ll come back to you with a quote.
Related advice
Aftercare tips
A little care helps the new joints last. Our advice:
- Make sure water runs off the sill
- Renew mastic before redecorating the windows
- Check the mastic when you check the paintwork
- Find out about consent before window work on a listed home
Make sure water drains away from the window surround. Water sitting against the mastic shortens its life.
Fine cracks show the mastic is starting to fail. Renewing it then is simpler than waiting until it falls out.
Honest limits
Before you book, it’s worth knowing the limits too:
- Planning or listed building consent (your local planning authority decides)
- Cracked or broken glass
- Sash cords, weights and draught-proofing of the sashes
Not sure which it is? You can call 0345 464 0079 or drop us an email and we will tell you honestly.
Surfaces we seal
- Period & listed homes
- Tenement windows
- Brick reveals
- Sash and case windows
- Timber door frames
- Stone surrounds
What affects the quote in Monkwood
There’s no set price list. The quote depends on:
- Whether the work is at height
- Any working-time requirements on site
- How much old sealant there is and how hard it is to remove
- Mould in or behind the old joints
A few things move the cost up or down: 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:
- How we’d reach the joints
- Whether it’s a home or a business
- A few photos by email, if you can
- The problem you’ve noticed
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll explain how we’d tackle it. Whenever you’re ready, call 0345 464 0079 or drop us an email.
DIY versus a professional finish
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Also near Monkwood
What else we do in Monkwood
Landlord and commercial work in Monkwood
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
We work for letting agents and landlords as well as householders. Sealant work between tenants keeps a property looking cared for.
What we’re called out for in Monkwood
Most of it is simply age. Sand mastic is a maintenance item like any pointing, depending on exposure and upkeep.
Common reasons people contact us are:
- Mastic round period door frames that has failed
- Mastic that needs renewing before redecorating
- Cement or filler used on old window joints that has cracked
- Modern sealant on a period surround
In and around Monkwood, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
Questions to ask before booking
- What happens if they find a problem under the old sealant
- How long the guarantee is
- Whether they’re fully insured
- Whether the sealant suits the joint