Hampshire · England
Whiteley Sand Mastic
Professional sand mastic in and around Whiteley, with every bit of old sealant taken out first and a 12-month guarantee.
- Draughts and rain around sash boxes
- Gaps between timber frames and stone or brick
- Cracked mastic round a front door frame
About our sand mastic in Whiteley
On many period windows, sand mastic looks right and suits the building. On modern frames we’d normally use a flexible sealant and we’ll explain which is best for yours. We work on brick reveals, tenement windows and sash and case windows, and people most often call us about cracked mastic round a front door frame and mastic dropping out of the joint.
Homes around Whiteley range from older properties to newer houses, and their windows range just as widely. Each frame material needs the right sealant against the right wall.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Where
- Whiteley (PO15)
- Wider area
- Hampshire
- Cover
- One year on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Landlord and commercial work in Whiteley
Letting agents often deal with us directly. Tell us the address, the job and how access works and we’ll quote.
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Surface by surface
Timber door frames
Door frames get knocked and soaked, so their mastic can fail sooner. It’s renewed by hand.
Brick reveals
Loose mastic comes out and deep gaps are packed before the new mastic goes in.
What we do, step by step
When we get to you, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes a few hours for a single window, longer for several. Parking around Whiteley is usually easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- First, we look at the surrounds with you and agree what needs doing.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Preparing for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Plan for the work area to be out of bounds to pets and children
- Let us know about parking restrictions
How to get a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we’ll explain how we’d tackle it. Whenever you are ready, call 0345 464 0079 or email us.
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What sand mastic looks like in Whiteley
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Managing a site like Whiteley Primary School? Then the mastic around its windows and doors needs looking after like any other building’s. For an older house near a landmark such as St Margaret Mary, the joint between an old wall and a newer frame is normally the first place rain gets in.
Whiteley is about 3 miles south-east of Hedge End, in Hampshire. Jobs in Whiteley get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. 683 places in Hampshire are on our list. Our Southampton page covers work nearby (6 miles or so).
Jobs for sand mastic in PO15 works the same way as everywhere else we cover. Local streets include Oak Coppice Road, Thyme Avenue and Christie Avenue. Neighbouring places we cover for sand mastic include Burridge (1 mile north-west), Park Gate (1 mile south-west), Segensworth (1 mile south), Sarisbury (1 mile south-west) and Swanwick (1 mile west). Larger places within reach include Winchester (12 miles north), Gosport (7 miles south-east), Havant (12 miles east), Eastleigh (7 miles north-west), Fareham (3 miles south-east) and Horndean (11 miles east).
Local landmarks in Whiteley
Locally, jobs take us to homes and businesses close to Brookfield Community School and Language College. The closest station to Whiteley is Swanwick station, about 0.8 miles south-west. Other landmarks nearby include St Andrew's Castle (3.5 miles south-west) and Fareham Community Hospital (1.4 miles south-west). For a walk, there’s Swanwick Lakes.
When to call us in Whiteley
Some old mastic was never deep enough. A thin layer doesn’t hold well so we make sure the new mastic is the right thickness.
People usually contact us after spotting one of these:
- Gaps between timber frames and stone or brick
- Window mastic to renew ahead of painting
- Mastic round period door frames that has failed
- Failed mastic on an exposed elevation
If you let a flat or house near Swanwick station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
What to look for in a quote
- Whether they seal over old material or remove it
- How the colour is chosen
- What product goes in the joint
- How hidden problems are handled
Aftercare tips
Looking after new joints is easy:
- Don’t paint over the new mastic
- Have rotten timber repaired before new mastic goes in
- Make sure water runs off the sill
- Avoid heavy scraping on the mastic joint
Make sure water drains away from the window surround. Water sitting against the mastic shortens its life.
Sound mastic protects the frame. Failed mastic lets water reach the timber and timber that stays wet can rot.
Why it’s worth doing now in Whiteley
Not every draught comes from the sashes themselves. Open mastic joints round the box can let air in, and renewing the mastic closes them. In an older home around Whiteley, damp from a failed joint can get into timber and plaster, and that is a much bigger job than renewing the sealant.
A failed joint rarely gets cheaper to fix by waiting. If you are not sure whether it needs doing, phone 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
Why choose Mr Mastic in Whiteley
- Homes, businesses and hotels
- An ARBOMaster approved applicator
- Quality sealants from Arbo and Everbuild
- Full insurance on every job
Take a look at what affects the cost and customer reviews.
Also near Whiteley
Also in Whiteley
Common questions in Whiteley
Do you work for landlords with property near Swanwick station?
Yes, we work for landlords and agents. You can call 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before any work starts.
Do you cover Whiteley for sand mastic?
Yes. Our work covers London and the South East, and Whiteley is part of that. You can ring 0345 464 0079 or drop us an email and let us know what needs doing.
What do you need from me for a quote?
Only a few details: where it is, what you’ve noticed and how we reach it. After that, simply call 0345 464 0079 or send us an email.
Is there any odour?
There can be a smell while the sealant cures, which fades as it sets. Ventilation helps.
Will it make a mess?
Tidy work is part of the job. We protect what’s around the joints, and the area is left clean when we finish.
Can old silicone round a sash window be swapped for sand mastic?
Often, yes. With the silicone removed and the joint cleaned, sand mastic is applied by hand.
Do I have to be there?
It depends on the job. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
How long does sand mastic take to harden?
A skin forms quite soon, but full hardening takes longer. We will explain what to expect before we leave.
DIY sealant or a professional job?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.