Hampshire · England
Sand Mastic in Rowner
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Rowner, backed by a one-year guarantee. Call for a quick quote.
- Cement or filler used on old window joints that has cracked
- Mastic worn away on windows facing the weather
- Mastic round period door frames that has failed
Landlords, agents and businesses in Rowner
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Letting agents and landlords in Rowner can book us as well as homeowners. Resealing between tenancies keeps a property looking cared for before the next move-in.
Sand mastic in Rowner, done properly
Sand mastic does not last for ever, leaving gaps round the window. We rake it out and renew it and tidies the surround. We work on stone surrounds, brick reveals and period & listed homes, and the jobs we see most are weathered mastic on the most exposed windows and mastic round period door frames that has failed.
Many houses in smaller places like Rowner have conservatories, garden rooms or patio doors. Those joints need the same attention as the main windows, and any older timber or sash windows need a sealant that suits them.
A 12-month guarantee comes as standard.
- Place
- Rowner (PO13, PO14)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Quote
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
When to call us in Rowner
Previous repairs in cement or silicone often trap water or crack away. They don’t move with the timber, and they generally need raking out.
Keep an eye out for any of the following:
- A silicone bead on a sash window that spoils the look
- Mastic round period door frames that has failed
- Open joints round the window box
- Crumbling sand mastic round a window
If you live in an older home near St Matthew's, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Questions to ask before booking
- Whether they seal over old material or remove it
- How much experience the applicator has
- What the quote includes, VAT included or not
- How long to leave it before use
Common questions in Rowner
Is Rowner 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.
Can you help a landlord with a rental near Fareham station?
Yes. We work for landlords and letting agents as well as homeowners, and several properties can go on one quote. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
How long does sand mastic take to go off?
A skin forms quite soon, but full hardening takes longer. We’ll explain what to expect before we leave.
Can old silicone round a sash window be swapped for sand mastic?
Yes. We remove the silicone and clean the joint, then point it with sand mastic.
Does someone need to be in?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Is consent needed for window work on a listed home?
Checking first is sensible. Ask your local planning authority whether consent is needed for listed or conservation-area properties.
Which is right for my windows, sand mastic or modern sealant?
Sand mastic generally suits period timber windows best. Modern frames normally suit a flexible sealant, and we will explain why.
Will the old sealant be removed?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
What affects the quote in Rowner
Call for a quick quote. What matters most is:
- Access and height
- The size of the job
- Mould in or behind the old joints
- Working hours on commercial sites
Combining jobs into one visit generally makes better use of the time than several visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
Asking for a quote
There’s no need for technical detail. Just tell us:
- Where the job is, and your postcode
- The type of property
- Any access issues, like height or stairs
- A few photos by email, if you can
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Go gently near the mastic when preparing windows
- Ask us before painting near the mastic
- Ask a joiner to look at soft timber first
- Renew mastic before redecorating the windows
Keep gutters and sills clear so water runs away from the surround. Constant wetting wears the mastic faster.
Renewing mastic before redecorating saves doing it twice. Paint over cracked mastic only covers it up.
Frames and glazing around Rowner
Rowner is within about 2 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on the mastic around older windows and doors, especially on the side facing the sea. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For landlords with property near Fareham station, any sash windows need sound mastic to keep draughts and rain out. If you look after a building such as Bridgemary School, its window and door frames need their mastic kept sound, just like a home’s.
Rowner is about 2 miles north-west of Gosport, in Hampshire. If you need sand mastic in Rowner, it’s easy to get a quote: please call 0345 464 0079 or email us. We cover Hampshire from our Crawley base, Rowner included. Our area takes in 683 places across Hampshire, from the larger towns to small villages.
Every address in PO13 and PO14 is within our area for sand mastic, from the main roads to the quietest streets. Whether your property is on Wych Lane, Camp Road and Keyes Road or anywhere close by, we can help. Close by, we work in Bridgemary (1 mile south-east), Peel Common (1 mile west), Crofton (1 mile west), Elson (1 mile south-east) and Lee-on-the-Solent (2 miles south-west). We also work in nearby towns such as Havant (9 miles east), Eastleigh (12 miles north-west), Horndean (9 miles north-east), Chandler's Ford (15 miles north-west), Hedge End (9 miles north-west) and Waterlooville (8 miles north-east).
Local landmarks in Rowner
In Rowner, that means homes and buildings near Holbrook Primary School, The Green Dragon pub and Baycroft School, among other places. Rowner’s nearest station is Fareham station, roughly 2.3 miles north. Other landmarks nearby include Gosport War Memorial Hospital (2.3 miles south-east) and Portchester Castle (2.9 miles east). Open spaces near Rowner include West of the River Alver and Portsdown Hill.
How the visit works
We bring everything the job needs with us. After a quick look at the joints together, the area is protected and the work begins. Most jobs take a few hours per window, depending on the condition of the joints. A visit to Rowner 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.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- Keep pets and children clear of the area while we work
- Move anything stored near the joints
How to get a quote
To get a quote, ring 0345 464 0079 or email us with the location and a short description of the problem. We’ll give you a clear price before any work starts.
Read more
Different surfaces, different methods
Sash and case windows
Most of our sand mastic work is on sash windows. We renew the mastic round each box.
Stone surrounds
Old stone surrounds are often uneven, so the gap isn’t the same all the way round. Sand mastic is shaped by hand to suit.
Places near Rowner
Other services in Rowner
DIY versus a professional finish
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly.