Hampshire · England
Sand mastic for sash & case windows in Hawley, Hampshire
Sand mastic for Hawley and the surrounding area: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Tired mastic found when preparing windows for paint
- Gaps round a timber door in stone or brick
- Draughts and rain around sash boxes
Should I try it myself first?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Sand mastic in Hawley, done properly
We renew sand mastic around sash windows and doors set in stone or brick. The old mastic is raked out, and new mastic is applied and shaped by hand. If you have draughts and rain around sash boxes and patchy fillers round a sash window, we can put it right, on timber door frames, sash and case windows and stone surrounds alike.
In smaller places like Hawley, 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 of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Where
- Hawley (GU17)
- Region
- Hampshire
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What the job involves on each surface
Period and listed homes
Materials matter on listed and conservation-area homes. Like-for-like sand mastic is generally favoured.
Stone surrounds
Stone surrounds suit sand mastic well. The finish blends with the masonry.
Aftercare tips
So the new joints stay in good condition:
- Inspect the joints round the windows every year or so
- Ask us before painting near the mastic
- Have rotten timber repaired before new mastic goes in
- Sort the mastic before the decorators arrive
Keep paint scrapers and sanders off the mastic when redecorating. It can be damaged by heavy scraping.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens.
Hawley homes and the weather
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you live in an older home near Holy Trinity Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame. For site and facilities teams at buildings such as Hawley Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Hawley is about 2 miles south of Sandhurst, in Hampshire. Our applicators cover sand mastic for householders, landlords and businesses in Hawley and the surrounding area. We cover 683 towns and villages across Hampshire. There’s also a page for Reading, roughly 12 miles from Hawley.
Postcode districts we cover here for sand mastic: GU17. If you need sand mastic at a property on London Road, Hawley Green and Fernhill Road or anywhere close by, we can help. Being close to the A30, Hawley is simple for us to get to for sand mastic. Neighbouring places we cover for sand mastic include Watchmoor (1 mile east), Blackwater (1 mile north-west), Frogmore (1 mile north-west), York Town (1 mile north-east) and College Town (1 mile north). Further out, we also cover Basingstoke (15 miles west), Fleet (4 miles south-west), Aldershot (6 miles south), Alton (15 miles south-west), Bordon (15 miles south) and Hook (8 miles west).
Around Hawley
Locally, jobs take us to homes and businesses close to Mr Bumble pub, Fernhill School and Language College and Royal Military Academy Library and the streets around them. Hawley has its own railway station: Blackwater station. A little further out are Staff College Museum (1.6 miles north-east) and Frimley Park Hospital (1.7 miles east). Green spaces nearby include Wildmoor Heath and Horseshoe Lake.
Questions from Hawley
I let a flat near Blackwater station. Can you help?
Yes, we work for letting agents and landlords. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear price.
Is Hawley in your area for sand mastic?
Yes. We work across London and the South East, and Hawley is part of that. Just ring 0345 464 0079 or email us with a few details of the job.
When will the new mastic be hard?
The surface skins quite quickly and it hardens fully over a longer time. The weather and joint depth both affect it.
What guarantee comes with the work?
You get our 12-month guarantee on every job.
Which is right for my windows, sand mastic or modern sealant?
That depends on your windows. Period windows in stone or brick usually suit sand mastic and newer frames usually get a flexible sealant.
Does someone need to be in?
It depends on the job. For work indoors, someone needs to let us in, and for outside work we’ll agree access with you when we book.
Can old silicone round a sash window be swapped for sand mastic?
In most cases. The silicone is cut out and the joint cleaned before the sand mastic goes in.
Can new sealant go over the old?
No, because it fails. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
Signs you need sand mastic in Hawley
Some old mastic was never deep enough. A thin layer does not hold well so we make sure the new mastic is the right thickness.
It’s worth asking for a quote if you see:
- Open joints round the window box
- Mastic worn away on windows facing the weather
- Gaps round a timber door in stone or brick
- Draughts and rain around sash boxes
For landlords with property near Blackwater station, any sash windows need sound mastic to keep draughts and rain out.
Comparing quotes
- How hidden problems are handled
- Are they insured?
- What guarantee comes with the work
- How much experience the applicator has
How it works
Before we leave, we go over the finished joints with you and explain the cure time. The work normally takes a few hours per window, depending on the condition of the joints, depending on the size of the job. In a smaller place like Hawley, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- We start by checking each surround and agreeing the joints to renew.
- 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 mastic is finished to sit tidily against the stone or brick.
How to prepare
- Mention any leaks or damp you’ve noticed
- Tell us about any previous sealing or DIY attempts
- For indoor joints, keep the area dry beforehand if you can
Ask for a quote
We do not publish a price list, because every job is different. Instead, we give you a clear price for your job. To get started, ring 0345 464 0079 or drop us an email.
Read more
What happens if it’s left?
Before painting the windows, it pays to renew the mastic. Paint over cracked mastic will not stop the gaps, and the new mastic is traditionally left unpainted. Around Hawley, water from a failed joint in an older home can soak into timber and plaster, and that’s a much bigger job than renewing the sealant.
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part, and we will explain the quote if you ask.
Why book with us
- Trusted Arbo and Everbuild sealants
- Experience in homes, commercial sites and hotels
- Over 20 years’ experience
- Any old sealant cut out fully, not covered over
What affects the quote in Hawley
We don’t publish a price list, because no two jobs are the same. What we look at:
- The number and length of the joints
- The old material and how stubborn it is
- Access and height
- Whether there’s mould to deal with
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or send us an email and we’ll talk you through it.
Helping us quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- The type of property
- What’s wrong with the joints now
- Where the job is, and your postcode
- If someone has resealed it before
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is. When it suits you, phone 0345 464 0079 or drop us an email.