Hampshire · England
Sand Mastic in Brockenhurst
We cover Brockenhurst for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly.
- Modern sealant on a period surround
- Mastic that needs renewing before redecorating
- Draughts and rain around sash boxes
Honest limits
New sealant can’t fix everything, and we’d rather say so up front. It won’t solve:
- Broken panes
- Planning or listed building consent (your local planning authority decides)
- Timber that has rotted
Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly.
Joints and surfaces we work on
- Period & listed homes
- Tenement windows
- Timber door frames
- Brick reveals
- Stone surrounds
- Sash and case windows
How we handle sand mastic in Brockenhurst
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s made from sand and a linseed-oil-based binder, applied by hand. On period homes, it looks right where silicone wouldn’t. We work on period & listed homes, timber door frames and stone surrounds, and people most often call us about tired mastic found when preparing windows for paint and mastic worn away on windows facing the weather.
Around Brockenhurst, conservatories, garden rooms and patio doors are often part of the house. Those joints need the same attention as the main windows, and any older timber or sash windows need a sealant that suits them.
Big or small, you get the same 12-month guarantee.
- Where
- Brockenhurst (SO42)
- Region
- Hampshire
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Leave it or put it right?
Before painting the windows, it pays to renew the mastic. Paint over cracked mastic won’t stop the gaps and traditional guidance is to leave the new mastic unpainted. Homes in smaller places like Brockenhurst can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are unsure, call 0345 464 0079 or email us for an honest opinion and a quote.
What you get with us
- 180+ five-star Google reviews
- Anti-fungal sanitary silicone in wet areas
- Over 20 years’ experience
- Homes, businesses and hotels
Common questions in Brockenhurst
Will you come out to Brockenhurst?
Yes. Brockenhurst is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Do you cover Brockenhurst for sand mastic?
Yes. Our work covers London and the South East, and Brockenhurst is part of that. Just ring 0345 464 0079 or send us an email with a few details of the job.
Can I paint the new mastic?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we will talk you through it.
Which is right for my windows, sand mastic or modern sealant?
We’ll talk it through with you. Period homes often look best with sand mastic and newer frames suit modern sealant.
Are you fully insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
How long does the job take?
A typical job takes anything from a few hours to a full day, depending on how many windows, including preparation and clearing up. We will confirm how long when we quote.
When will the new mastic be hard?
It takes a while. It skins first and hardens fully later and we will give you an idea for your job.
Can I choose the sealant colour?
Most of the time, yes. We’ll explain which colours are available and agree one before work begins.
How it works
At the end, we look at the finished work together and tell you how long to leave it. The work normally takes a few hours per window, depending on the condition of the joints, depending on the amount of work. In a smaller place like Brockenhurst, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- We start by checking each surround and agreeing the joints to renew.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Getting ready for the visit
- Keep pets and children clear of the area while we work
- Tell us if parking is tricky
- Mention any sign-in or site rules at work premises
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’ll explain what’s involved.
Advice
DIY versus a professional finish
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Also near Brockenhurst
Also in Brockenhurst
Looking after it afterwards
Good habits help new joints last longer. Our tips:
- Keep modern sealant off the mastic
- Renew mastic before redecorating the windows
- Do not paint over the new mastic
- Check with your local planning authority if your home is listed
Leave the new mastic unpainted, as traditional guidance advises. If you are redecorating, ask us first.
It’s best to renew mastic before painting the windows. Painting over failed mastic hides the problem for a while.
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
Frames and glazing around Brockenhurst
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Letting a property close to Brockenhurst station? Then any sash windows need sound mastic to keep draughts and rain out. For site and facilities teams at buildings such as Brockenhurst Church of England Primary School, larger buildings have plenty of frames, and the mastic around each one ages. If you live in an older home near Church of St Saviour, the joint between an old wall and a newer frame is usually the first place rain gets in.
Brockenhurst is about 5 miles north of Lymington, in Hampshire. If you need sand mastic in Brockenhurst, it’s easy to get a quote: please phone 0345 464 0079 or send us an email. We cover Hampshire from our Crawley base. Brockenhurst is one of 683 places in Hampshire where we work. Our Southampton page covers work nearby (11 miles or so).
Here we cover the SO42 postcode area for sand mastic. You will find streets such as Fibbards Road, The Rise and Brookley Road, all of which we cover. Close by, we work in South Weirs (1 mile south-west), Setley (1 mile south), Balmerlawn (1 mile north-east), Lyndhurst (4 miles north) and Emery Down (4 miles north). Further out, we also cover Eastleigh (14 miles north-east), Totton (8 miles north-east), Chandler's Ford (14 miles north-east), Hedge End (14 miles north-east), Lymington (5 miles south) and Romsey (13 miles north).
Landmarks near Brockenhurst
In Brockenhurst, that means homes and buildings near Morant Arms, among other places. Brockenhurst has its own railway station: Brockenhurst station. Well-known places in the area include Lymington New Forest Hospital (3.8 miles south).
What affects the cost of sand mastic
We do not publish a price list. The quote depends on:
- When we can work, for business premises
- Whether there’s mould to deal with
- The type of sealant required
- The old material and how stubborn it is
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote.
What to tell us for a quote
When you contact us, these details help:
- Any previous sealing or DIY work
- The problem you’ve noticed
- Pictures of the joints, sent by email
- How many joints, rooms or windows are involved
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or email us.