Southampton · England
Window & door mastic in Regents Park, Southampton
Window and door frames in Regents Park need attention? We remove the old material, prepare the joints and seal them properly.
- Mastic that’s falling out in pieces
- Gaps between the frame and the inside reveal
- Whistling draughts around closed windows
Window mastic in Regents Park
The mastic around a window or door seals the gap between the frame and the wall. Once that seal fails, wind and rain find the gap. The old mastic is removed and the joint resealed with a flexible exterior sealant. If you have mastic that’s falling out in pieces and sealant in the wrong colour for the frame, we can put it right, on composite doors, patio & French doors and window sills alike.
In smaller places like Regents Park, homes range from older cottages to newer houses, with windows to match: timber, uPVC and aluminium. The right sealant depends on the frame and on what it sits in.
All our work comes with a one-year guarantee.
- Place
- Regents Park (SO15, SO16, SO17)
- Region
- Southampton
- Guarantee
- A year, on every job
- Price
- A clear price before we start
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
What happens on the day
All our tools and materials come with us in the van. After a quick look at the joints together, the area is protected and the work begins. It normally takes a few hours for a handful of frames, longer for a whole house. For a job in Regents Park, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- First, we go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- We tool each bead neatly and check every joint is closed.
How to prepare
- Plan for the work area to be out of bounds to pets and children
- For indoor joints, keep the area dry beforehand if you can
- Clear items away from the joints we’re working on
Getting a quote
For a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We will send you a clear quote before any work starts.
Related advice
Should I try it myself first?
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
If you do try it yourself, take your time over the 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.
Towns and villages near Regents Park
Other services in Regents Park
Windows and doors in Regents Park
Regents Park 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 window and door frames, especially on the side facing the sea. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you let a flat or house near Millbrook (Hants) station, renewing tired window mastic between tenants heads off draught and damp complaints. Schools such as Regents Park Community College are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. Homes close to Church of the Holy Trinity include some older properties, and the joint between an old wall and a newer frame is normally the first place rain gets in.
Regents Park is about 2 miles west of Southampton, in Southampton. Homes, rented property, offices and hotels in Regents Park is covered for window mastic. Every job comes with our 12-month guarantee. Across Southampton, we cover 40 places, Regents Park among them.
All of SO15, SO16 and SO17 is within our area for window mastic, from the main roads to the quietest streets. If you need window mastic at a property on May Road, Mill Road and York Road or anywhere close by, our applicators can take on the job. Regents Park is on the A33 and A3057, which makes it straightforward to reach with everything needed for window mastic. Close by, we work in Shirley (1 mile east), Millbrook (1 mile south-west), Freemantle (1 mile south-east), Maybush (1 mile north-west) and Coxford (1 mile north). Within a short drive, we also cover Townhill Park (4 miles east), Midanbury (3 miles east), Thornhill (4 miles east), Chartwell Green (4 miles east), Harefield (4 miles east) and Itchen (3 miles east). As one of the bigger places in Southampton, Regents Park has homes, rented property and businesses of every kind.
Landmarks near Regents Park
Typical jobs here are in homes near Foundry Lane Primary School, St James' Park and Millbrook Community School. The closest station to Regents Park is Millbrook (Hants) station, roughly 0.6 miles south-east of the centre. Nearby you’ll also find Marlands Shopping Centre (1.8 miles south-east) and Netley Castle (4.6 miles south-east). Open spaces near Regents Park include Testwood Lakes.
Your questions about window mastic in Regents Park
I let a flat near Millbrook (Hants) station. Can you help?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or send us an email and tell us about the property, and we will give you a clear quote.
Will you come out to Regents Park?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Where do you work from?
Mr Mastic is based in Crawley. We cover Regents Park and the rest of Southampton, along with the rest of our area.
Can new window sealant be painted?
That depends on the product. Silicone is not paintable, but some hybrid sealants are. Mention any painting plans before we start.
Do the sealants smell?
It depends on the product. Some smell for a while, some hardly at all.
What sealant do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Do you have sealant for grey or black windows?
Yes. Grey and black frames get grey or black sealant, and wood-effect frames usually suit brown.
How much does window mastic cost in Regents Park?
It depends on the job, so we quote each one individually. For a quick quote, call 0345 464 0079 or email us and let us know what needs doing and where.
How we quote for window mastic
You’ll get a clear quote before work begins. It’s based on:
- How many areas need sealing
- Any working-time requirements on site
- Which sealant suits the joint
- Any mould that needs treating
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all play a part, and we’ll explain the quote if you ask.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- The type of property
- Any access issues, like height or stairs
- The address or postcode of the job
- A few photos by email, if you can
For window mastic in Regents Park, ring 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
What happens if it’s left?
Choosing the product is half the job. Decorators’ caulk and bathroom silicone aren’t designed for outside joints that move. A low-modulus exterior sealant keeps its stretch through hot and cold weather. Homes in smaller places like Regents Park 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. If you’re unsure, phone 0345 464 0079 or drop us an email for an honest opinion and a quote.
Why book with us
- Experience in homes, commercial sites and hotels
- We are fully insured
- Sealant colour chosen to suit
- More than 20 years in sealant work
Read how sealant jobs are priced or our reviews.
Different surfaces, different methods
Composite doors
Composite doors are normally hung in an uPVC-type frame, so its perimeter joint is sealed much like a window. The bead is colour-matched to the frame.
Aluminium frames
Metal frames expand in the sun and are often slim, with little room for error. A tidy bead in anthracite grey, black or a matching colour keeps the clean look.
Landlord and commercial work in Regents Park
Hotels need rooms back in use, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
When it is not the sealant
We won’t take on work that won’t last, so these are the limits:
- Penetrating damp from a failed cavity tray or render
- A frame that has rotted at the joint
- Draughts through the window seals rather than the frame
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think.
Where we work in Regents Park
- Composite doors
- Timber windows & doors
- Patio & French doors
- Window sills
- uPVC windows
- Aluminium frames