Hampshire · England
Sand mastic for sash & case windows in Romsey, Hampshire
Sand mastic for Romsey and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Draughty sash windows at the surround
- Window mastic to renew ahead of painting
- Modern sealant on a period surround
Sand mastic in Romsey
Across Romsey, we renew sand mastic around sash and case windows. Each joint is raked out, prepared and pointed by hand for a neat, traditional finish. We work on timber door frames, brick reveals and period & listed homes, and the jobs we see most are tired mastic found when preparing windows for paint and modern sealant on a period surround.
Around Romsey, many houses have gained conservatories, French doors or replacement windows over time. Each one adds more joints to look after, and those joints age at different rates. Leaks normally start at a sill, a frame head or a glazing joint.
There’s a 12-month guarantee on every job, large or small.
- Place
- Romsey (SO51)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What affects the quote in Romsey
The price is agreed before any work begins. It takes into account:
- The product the joint needs
- The number and length of the joints
- Access and height
- Working hours on commercial sites
Doing several joints on one visit is generally more efficient than separate visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
What to tell us for a quote
What to tell us when you ask for a quote:
- A few photos by email, if you can
- The type of property
- Access, such as stairs, a lift or height
- If someone has resealed it before
Need a quote? Please call 0345 464 0079 or drop us an email and tell us about the job. We’ll explain what we’d do and give you a clear price before work begins.
Sand mastic in Romsey: local notes
Historic houses like Mottisfont Abbey (about 4 miles north-west) are a reminder that the area around Romsey 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. The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you look after a building such as Romsey Primary School, the mastic around its windows and doors needs looking after like any other building’s. For landlords with property near Romsey station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Romsey is about 6 miles west of Eastleigh, in Hampshire. If you need sand mastic in Romsey, please ring 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Hampshire, Romsey included. Romsey is one of 683 towns and villages in Hampshire we cover. Southampton is on our list too, around 6 miles away.
We cover every part of the SO51 postcode area for sand mastic and the streets around it. Sand mastic is available to properties on Station Road, Corn Market and Ashley Meadows. You’ll find Romsey on the A27 and A3057, so it’s easy for us to get to with everything needed for sand mastic. Neighbouring places we cover for sand mastic include North Baddesley (2 miles south-east), Toothill (2 miles south), Ashfield (2 miles south), Lee (2 miles south) and Upton (3 miles south). Larger places within reach include Winchester (8 miles north-east), Eastleigh (6 miles east), Andover (15 miles north), Totton (5 miles south), Chandler's Ford (4 miles east) and Hedge End (9 miles south-east).
Local landmarks in Romsey
Typical jobs here are in homes near The Mountbatten School, Bishop Blaize Public House and The Romsey School and the streets around them. The closest station to Romsey is Romsey station, roughly 0.5 miles west of the centre. Other landmarks nearby include Romsey Community Hospital (less than half a mile south) and King Johns House (0.8 miles west). The countryside around Romsey includes Emer Bog and Baddesley Common.
Why act early in Romsey
Not every draught comes from the sashes themselves. Gaps between the frame and the wall can be just as bad and new mastic seals them. In Romsey, as anywhere, most leaks start as a small gap in a joint, and they’re far easier to fix early.
We don’t show prices on the website, because the cost depends so much on the job itself. For a quick quote, please ring 0345 464 0079 or email us and we will talk you through it.
Why choose Mr Mastic in Romsey
- 20+ years of sealant experience
- Experience in homes, commercial sites and hotels
- 4.9 on Google from 180+ five-star reviews
- 12-month guarantee on every job
Common problems we fix in Romsey
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.
The most common problems we see are:
- Patchy fillers round a sash window
- Cracked mastic round a front door frame
- A silicone bead on a sash window that spoils the look
- Mastic that needs renewing before redecorating
If you live in an older home near St Swithun's Church, the joint between an old wall and a newer frame is normally the first place rain gets in.
Questions to ask before booking
- What happens if the job turns out different
- How long to leave it before use
- Is VAT in the price?
- Whether they seal over old material or remove it
Nearby places to Romsey
What else we do in Romsey
What the job involves on each surface
Stone surrounds
The stone is treated with care when the old mastic comes out.
Sash and case windows
Most of our sand mastic work is on sash windows. Each joint round the box is raked out and renewed.
Can I do it myself?
If you’ve already had a go yourself, that’s fine. We cut it out and start again.
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.
Questions from Romsey
Is Romsey in your area for sand mastic?
Yes. Our work covers London and the South East, and Romsey is part of that. You can call 0345 464 0079 or send us an email and tell us what needs doing.
Is sand mastic in Romsey guaranteed?
All our work, in Romsey and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.
I rent my home. Can I book you?
Yes, but check with your landlord or agent first. Many landlords are glad to have it sorted.
Should I check with the council before work on a listed or conservation-area home?
Your local planning authority is the one to ask. They’ll tell you if consent is needed.
How long will you be here?
As a guide, most jobs take a few hours for a single window, longer for several. Bigger jobs take longer, and we’ll say how long yours will take.
What exactly is sand mastic?
A traditional pointing material made from sand and a linseed-oil-based binder, used between timber frames and stone or brick.
Can old silicone round a sash window be swapped for sand mastic?
Yes. The silicone is cut out and the joint cleaned before the sand mastic goes in.
Is sand mastic better than silicone for my windows?
Sand mastic generally suits period timber windows best. On modern frames, we’d normally use a flexible sealant, and we will explain why.
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. A few tips:
- Keep sills and gutters clear so water drains away
- Look over the window mastic once a year
- Ask the planning authority about consent for listed or conservation-area homes
- Don’t paint over the new mastic
Avoid painting over the new mastic, which is the traditional advice. Ask us before any decorating around it.
Fine cracks show the mastic is starting to fail. Renewing it then is simpler than waiting until it falls out.
What we do, step by step
When we arrive, we look over the joints with you first, so you know exactly what we are doing. Surfaces next to the work are protected before any work begins. Most jobs take a few hours for a single window, longer for several. In Romsey, parking is rarely complicated, though it helps to know about driveways or restrictions, and let us know if the work is upstairs, in a flat or up high outside.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Preparing for the visit
- Mention any parking rules near the property
- Tell us about access, such as stairs, a lift or high-level joints
- Try not to wet indoor joints just before the visit
Get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. Whenever you are ready, call 0345 464 0079 or email us.