Hampshire · England
Sand mastic for sash & case windows in South Hayling, Hampshire
Sand mastic for South Hayling, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Mastic round period door frames that has failed
- Cement or filler used on old window joints that has cracked
- Weathered mastic on the most exposed windows
For landlords and businesses
We work for landlords and agents as well as householders. Sealant work between tenants keeps a property looking cared for.
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
About our sand mastic in South Hayling
A silicone bead around a sash window can look out of place and isn’t always the right material. Sand mastic gives a finish that matches the age of the house and we can swap the silicone for it. If you’re dealing with draughts and rain around sash boxes and weathered mastic on the most exposed windows, we can put it right.
In a smaller place like South Hayling, some walls face open ground and catch the full force of the weather, so exposed windows and doors face the weather head on. The mastic around frames on those walls tends to age faster.
Big or small, it’s backed by our 12-month guarantee.
- Place
- South Hayling (PO11)
- Wider area
- Hampshire
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Towns and villages near South Hayling
More services for South Hayling
What affects the quote in South Hayling
Some jobs are bigger than they look, and some smaller. The main factors:
- Whether the work is at height
- Which sealant suits the joint
- When we can work, for business premises
- How much old sealant there is and how hard it is to remove
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
What we need to know
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- Whether it has been sealed before
- How many joints, rooms or windows are involved
- The problem you’ve noticed
- Access, such as stairs, a lift or height
Call for a quick quote, or email us if that’s easier. Describe what needs sealing and we’ll talk you through the work and send you a clear quote.
Questions from South Hayling
Does living near the coast affect sand mastic in South Hayling?
Near the sea, outside joints face more wind, rain and salt than they would inland, so the choice of sealant and the preparation matter even more. Walls facing the sea are usually the first to need attention.
I let a flat near Fratton station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just ring 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear price.
Do I have to be there?
We need access to the joints, so we’ll agree that with you when we book. For inside work, that normally means someone being in.
Can sand mastic be painted?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we will talk you through it.
How long does sand mastic take to harden?
A skin forms quite soon, but full hardening takes longer. We’ll tell you what to expect for your job.
Will the old sealant be removed?
Yes, always, and completely. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
How do I get a quote for sand mastic in South Hayling?
Size, access and the old material all affect the cost. Ask us for a quote.
Windows and doors in South Hayling
South Hayling is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you live in an older home near St Mary's Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. For landlords with property near Fratton station, cracked sand mastic around sash windows lets in the draughts tenants complain about. If you look after a building such as Mengham Junior School, the mastic around its windows and doors needs looking after like any other building’s.
South Hayling is about 5 miles east of Portsmouth, in Hampshire. Jobs in South Hayling get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. Across Hampshire, we cover 683 places, and South Hayling is one of them.
Work in PO11 works the same way as everywhere else we cover. If you need sand mastic at a property on Church Road, Station Road and St Leonard's Avenue or a nearby road, we can help. Neighbouring places we cover for sand mastic include West Town (1 mile west), Tourner Bury (1 mile north-east), Tye (2 miles north), Stoke (2 miles north) and North Hayling (2 miles north). Further out, we also cover Gosport (8 miles west), Havant (5 miles north), Fareham (11 miles north-west), Horndean (8 miles north), Waterlooville (7 miles north) and Petersfield (15 miles north).
What’s near South Hayling
Around South Hayling, our work takes us to homes and buildings near Newton House Hotel, The Hayling College and The Hayling College and the streets around them. South Hayling’s nearest station is Fratton station, about 4.3 miles west. Other landmarks nearby include St James Hospital (3.3 miles west) and Eastney Beam Engine House (3.1 miles west). Green spaces nearby include Hayling Billy.
What we do, step by step
You don’t need to clear the whole room or building, only the area right around the joints. Everything nearby is protected, and the work takes a few hours for a single window, longer for several for a typical job. In a smaller place like South Hayling, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- We check the window surrounds and agree which joints need renewing.
- We rake out the old mastic and clean the joint.
- We pack any deep gaps so the mastic sits at the right depth.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The mastic is finished to sit tidily against the stone or brick.
Preparing for the visit
- Clear the area around the work
- For business premises, tell us about site rules or sign-in
- Plan for the work area to be out of bounds to pets and children
Getting a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. Whenever you are ready, call 0345 464 0079 or drop us an email.
Related advice
Surface by surface
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. Sand mastic seals the joint round it.
Period and listed homes
Materials matter on listed and conservation-area homes. Sand mastic is often the preferred finish.
DIY sealant or a professional job?
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
Looking after it afterwards
Joint life depends on how it’s used and looked after. We suggest:
- Don’t paint over the new mastic
- Check with your local planning authority if your home is listed
- Clear gutters so water does not pour onto the windows
- Take care around the mastic when scraping paint
Don’t run silicone over the new mastic. If anything cracks, get it looked at before trying a quick fix.
Sound mastic protects the frame. Failed mastic lets water reach the timber, which can lead to rot.
Why it’s worth doing now in South Hayling
If you’re redecorating, renew the mastic first. Paint over cracked mastic won’t stop the gaps, and the new mastic is traditionally left unpainted. Homes in smaller places like South Hayling 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.
The cost reflects the work involved, not a rough estimate. That is why we ask a few questions first and give you a clear price before any work starts.
Why book with us
- Sanitary silicone with an anti-fungal additive in wet areas
- We are fully insured
- Any old sealant cut out fully, not covered over
- Approved under the ARBOMaster scheme
Read our cost guide and what customers say.