Hampshire · England
Sand mastic for sash & case windows in North Boarhunt, Hampshire
Sand mastic for North Boarhunt and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Modern sealant on a period surround
- Old sand mastic that has cracked, crumbled or fallen out
- Window mastic to renew ahead of painting
Sand mastic in North Boarhunt, done properly
On many period windows, sand mastic looks right and suits the building. Newer frames usually get a flexible sealant instead, and we’ll talk through which suits your home. We work on stone surrounds, timber door frames and sash and case windows, and the jobs we see most are open joints round the window box and cracked mastic round a front door frame.
Homes in small places like North Boarhunt often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
You are covered for a year from the day we finish. If anything isn’t right with it, call 0345 464 0079 or drop us an email.
- Where
- North Boarhunt (PO17)
- Wider area
- Hampshire
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Looking after it afterwards
Simple care keeps the joints in good condition. We recommend:
- Ask the planning authority about consent for listed or conservation-area homes
- Leave the new mastic unpainted
- Inspect the joints round the windows every year or so
- Go gently near the mastic when preparing windows
Avoid painting over the new mastic, as traditional guidance advises. Ask us before any decorating around it.
Crumbling mastic lets rain into the joint. It can soak into the frame and the surrounding masonry so early renewal protects both.
Nearby places to North Boarhunt
More services for North Boarhunt
What we do, step by step
Every visit runs the same way: we check the joints, protect the area around them, carry out the job and clear up. It generally takes anything from a few hours to a full day, depending on how many windows. Somewhere like North Boarhunt needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
How to prepare
- Let us know if you’ve seen damp or leaks
- Let us know about stairs, lifts or work at height
- For indoor joints, keep the area dry beforehand if you can
Ask for a quote
To get a quote, call 0345 464 0079 or email us with the location and a short description of the problem. You will have a clear quote before we start.
Read more
Should I try it myself first?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
Why deal with it now?
Not every draught comes from the sashes themselves. Gaps between the frame and the wall can be just as bad and new mastic seals them. Where a wall is exposed, as many are in small places like North Boarhunt, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Every job is a little different, 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 us?
- Homes, businesses and hotels
- Trusted Arbo and Everbuild sealants
- Rated 4.9 stars on Google
- Anti-fungal sanitary silicone in wet areas
Take a look at our cost guide or customer reviews.
Landlords, agents and businesses in North Boarhunt
Landlords and letting agents in North Boarhunt can book us as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
We also work for property managers and facilities teams. Several sites can be quoted together.
Sand mastic in North Boarhunt: local notes
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Schools such as Newtown Soberton Infant School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. Rented homes near Portchester station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about.
North Boarhunt is about 4 miles north-east of Fareham, in Hampshire. Homes, rented property, offices and hotels in North Boarhunt is covered for sand mastic. The work is guaranteed for a year. 683 places in Hampshire are on our list, from the larger towns to small villages. There’s also a page for Portsmouth, about 7 miles away.
We work across the PO17 postcode area for sand mastic. Streets in the area include Trampers Lane and Bere Farm Lane. If you’re just outside North Boarhunt, we cover Hundred Acres (1 mile north-west), Wickham Common (1 mile west), Boarhunt (2 miles south), Crockerhill (2 miles south-west) and Southwick (2 miles south-east). We also work in nearby towns such as Winchester (14 miles north-west), Gosport (6 miles south), Havant (7 miles east), Eastleigh (10 miles north-west), Fareham (4 miles south-west) and Horndean (6 miles east).
What’s near North Boarhunt
The closest station to North Boarhunt is Portchester station, about 3.3 miles south. Other landmarks nearby include Fareham Shopping Centre (3.2 miles south-west) and Portchester Castle (4.2 miles south). Green spaces nearby include Portsdown Hill and St Clair's Meadow.
When to call us in North Boarhunt
Timber frames move with the seasons. The movement cracks the mastic over time.
Most people get in touch when they notice something like this:
- Gaps where the frame meets the masonry
- Old sand mastic that has cracked, crumbled or fallen out
- Patchy fillers round a sash window
- Silicone on a period window that looks wrong
For an older house near a landmark such as Church of the Holy Trinity, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Before you book anyone
- How the joint is cleaned and prepared
- Are they insured?
- Who turns up on the day
- What happens if the job turns out different
What affects the cost of sand mastic
Jobs vary more than people expect. What affects the quote:
- Access and height
- How many rooms, windows or areas are involved
- The product the joint needs
- The old material and how stubborn it is
What you pay reflects the work, not a rough estimate. That is why we ask about the job first and send you a clear quote before any work starts.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- If someone has resealed it before
- The address or postcode of the job
- A few photos by email, if you can
- Roughly how big the job is
Want a quote for sand mastic? Please call 0345 464 0079 or email us and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
North Boarhunt questions
I let a flat near Portchester station. Can you help?
Yes. We work for landlords and agents as well as householders. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we will send you a clear quote.
Is North Boarhunt in your area for sand mastic?
Yes, North Boarhunt is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or email us and tell us what needs doing, and we will give you a clear price.
Should I use sand mastic or silicone?
It depends on the window. On many period windows, sand mastic looks right and suits the building, while modern frames normally get a flexible sealant.
How long does sand mastic take to harden?
Not right away. It skins first and hardens fully later, and we’ll tell you what to expect.
Do you take out the old sealant first?
Always. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Should I check with the council before work on a listed or conservation-area home?
Checking first is sensible. Ask your local planning authority whether consent is needed for work on a listed home or in a conservation area.
Can I choose the sealant colour?
We will suggest a colour to suit the surroundings. The choice depends on the product the joint needs.
Can sand mastic be painted?
Sand mastic is normally left unpainted, as guidance on traditional windows advises. Ask us before decorating.