Hampshire · England
Sand mastic for sash & case windows in Dibden, Hampshire
Sand mastic in Dibden from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Weathered mastic on the most exposed windows
- Cement or filler used on old window joints that has cracked
- Mastic that needs renewing before redecorating
How we handle sand mastic in Dibden
Sand mastic does not last for ever and gaps open up round the frame. We rake it out and renew it so the surround looks right again. If you have old cement repairs round a window that have failed and weathered mastic on the most exposed windows, we can help, on period & listed homes, sash and case windows and timber door frames alike.
Many houses in smaller places like Dibden have conservatories, garden rooms or patio doors. Their glazing joints and frame seals are as much a part of the job as the windows.
We stand behind the work with a one-year guarantee.
- Place
- Dibden (SO45)
- Region
- Hampshire
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Different surfaces, different methods
Timber door frames
Round a period front door, sand mastic gives the right look.
Sash and case windows
Most of our sand mastic work is on sash windows. Each joint round the box is raked out and renewed.
Nearby places to Dibden
Also in Dibden
Looking after it afterwards
Aftercare is simple:
- Do not run silicone over sand mastic
- Plan mastic work ahead of painting
- Have rotten timber repaired before new mastic goes in
- Ask the planning authority about consent for listed or conservation-area homes
Keep paint scrapers and sanders off the mastic when redecorating. Hard scraping can loosen it.
Small cracks are a sign the mastic is ageing. It’s easier to renew it before it drops out.
Signs you need sand mastic in Dibden
Shallow joints are a common cause. Mastic that’s too thin cracks and drops out, which is why we pack deep voids first and get the depth right.
Keep an eye out for these signs:
- Open joints round the window box
- Mastic dropping out of the joint
- Silicone on a period window that looks wrong
- Old cement repairs round a window that have failed
For site and facilities teams at buildings such as Applemore College, larger buildings have plenty of frames, and the mastic around each one ages.
Before booking anyone
- Which colour the sealant will be
- What product goes in the joint
- What happens if they find a problem under the old sealant
- What guarantee comes with the work
Frames and glazing around Dibden
Dibden is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on the mastic around older windows and doors, especially on the side facing the sea. Historic houses like Medieval Merchant's House (about 2.5 miles north) are a reminder that the area around Dibden has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
Rented homes near Southampton Town Quay station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. Homes close to Church of All Saints include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Dibden is about 1 mile west of Hythe, in Hampshire. From the centre of Dibden to the outskirts, sand mastic is available for homes and businesses alike. Our area takes in 683 places across Hampshire, from the larger towns to small villages.
We cover every part of the SO45 postcode area for sand mastic and the streets around it. You will find streets such as Cavalier Close, Cathay Gardens and Canterbury Drive, and we cover them all. Other places close to Dibden include Dibden Purlieu (1 mile south-east), Hythe (1 mile east), Marchwood (2 miles north-west), Beaulieu (3 miles south) and The Hummicks (4 miles south). Larger places within reach include Winchester (14 miles north), Gosport (13 miles east), Eastleigh (8 miles north-east), Fareham (10 miles east), Totton (5 miles north-west) and Chandler's Ford (8 miles north).
Local landmarks in Dibden
We work in homes and buildings around Testwood School and Orchard Junior School. Dibden’s nearest station is Southampton Town Quay station, about 2.2 miles north-east. Well-known places in the area include Royal South Hants Hospital (3.5 miles north) and Westquay (2.8 miles north).
What happens on the day
All our tools and materials come with us in the van. After a quick look at the joints together, we protect the area and start. Most jobs take a few hours per window, depending on the condition of the joints. A visit to Dibden is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- Each surround is checked first.
- The joint is raked out and cleaned.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
How to prepare
- Tell us if parking is tricky
- For indoor joints, keep the area dry beforehand if you can
- Mention if the joints have been sealed before
How to get a quote
Want a quote for sand mastic? Please call 0345 464 0079 or send us an email with a few details. We’ll explain what we’d do and send you a clear quote before any work starts.
Related advice
Questions from Dibden
Is Dibden within the area you cover?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Does the coastal weather in Dibden affect outside sealant?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Do you work for letting agents?
Yes. We work for homeowners, landlords, letting agents, businesses and hotels in Dibden.
Will there be a smell?
Possibly a little. Any smell clears as the sealant cures.
What guarantee comes with the work?
Every job comes with our 12-month guarantee.
Can you quote for more than one area?
Yes. Tell us about everything you’d like done.
Do you take out the old sealant first?
Yes. We cut out all the old sealant and clean the joint before resealing.
How long will you be here?
It depends on the size of the job, but most jobs take a few hours per window, depending on the condition of the joints. We will give you a better idea when we quote.
DIY sealant or a professional job?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
If you’re 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.
What we cannot put right
A few problems are outside what sealant work can do:
- Sash cords, weights and draught-proofing of the sashes
- Masonry that needs repairing
- Decayed frames that need repair
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think.
Joints and surfaces we work on
- Sash and case windows
- Stone surrounds
- Brick reveals
- Period & listed homes
- Timber door frames
- Tenement windows
Quotes for sand mastic in Dibden
For a quick quote, just ask. What matters most is:
- The old material and how stubborn it is
- Whether there’s mould to deal with
- The amount of work
- Any working-time requirements on site
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
What to tell us for a quote
Photos help, but a description is a good start. Try to tell us:
- Any access issues, like height or stairs
- Where the job is, and your postcode
- What’s wrong with the joints now
- The type of property
Asking for a quote is easy: let us know the job and the location. Photos by email help us understand the job, and we will come back to you with a quote.