Hampshire · England
Sand Mastic in Liss
Specialist sand mastic for Liss: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Open joints round the window box
- Cement or filler used on old window joints that has cracked
- Draughts and rain around sash boxes
Sand mastic for homes and businesses in Liss
Across Liss, we renew sand mastic around sash and case windows. Every joint is cleaned out and filled by hand, finished to suit the masonry. If you are dealing with cracked mastic round a front door frame and old cement repairs round a window that have failed, we can put it right, on sash and case windows, brick reveals and period & listed homes alike.
In smaller places like Liss, 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.
Whatever the size of the job, you get the same 12-month guarantee in Liss and across Hampshire.
- Place
- Liss (GU33)
- Region
- Hampshire
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
DIY versus a professional finish
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
Places near Liss
What else we do in Liss
What we can’t put right
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Putty and glazing repairs
- Masonry that needs repairing
- Planning or listed building consent (your local planning authority decides)
If in doubt, phone 0345 464 0079 or email us and we will say what we think.
Where we work in Liss
- Tenement windows
- Timber door frames
- Period & listed homes
- Stone surrounds
- Brick reveals
- Sash and case windows
Frames and glazing around Liss
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.
Schools such as Liss Infant School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. For landlords with property near Liss station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Liss is about 3 miles north-east of Petersfield, in Hampshire. Anywhere in GU33, we cover sand mastic for homes and businesses. Liss is one of 683 towns and villages in Hampshire we cover. Our Portsmouth page covers work nearby, about 18 miles away.
Work in GU33 works the same way as everywhere else we cover. Local streets include Station Road, Shotterfield Terrace and Greenfields. We also cover the places around Liss: West Liss (1 mile south-west), The Mint (1 mile north-east), Liss Forest (1 mile north), Hill Brow (1 mile south-east) and Durford Wood (1 mile south). Within a short drive, we also cover Havant (13 miles south), Horndean (11 miles south-west), Aldershot (15 miles north), Alton (8 miles north-west), Waterlooville (13 miles south-west) and Petersfield (3 miles south-west).
Near you in Liss
We work in homes and buildings around Whistle Stop pub, among other places. Liss has its own railway station: Liss station. Other landmarks nearby include Petersfield Community Hospital (3.6 miles south-west) and Bear Museum (3.5 miles south-west). For a walk, there’s Liss Riverside Railway Walk South and Wheatham Hill.
Landlord and commercial work in Liss
Landlords and letting agents in Liss can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will give you a quote.
Common questions in Liss
Will you come out to Liss?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you do sand mastic in Liss?
Yes. Our work covers London and the South East, and Liss is part of that. Just ring 0345 464 0079 or send us an email with a few details of the job, and we’ll send you a clear quote.
Is consent needed for window work on a listed home?
Your local planning authority is the one to ask. They decide whether consent is needed.
Can you match the sealant colour?
We will suggest a colour to suit the surroundings. The product needed can limit the range.
Can you seal over the old sealant?
No, it will not last. It may look fine at first, but the new layer lifts away from the old one. The old sealant has to come out completely.
How long does the job take?
As a guide, most jobs take a few hours for a single window, longer for several. Larger jobs naturally take longer.
Which products do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference.
How do I get a quote for sand mastic in Liss?
We don’t publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. You will get a clear quote before any work starts.
Quotes for sand mastic in Liss
Your quote is based on your job. We take into account:
- When we can work, for business premises
- The number of rooms or windows
- The amount of work
- How much old sealant there is and how hard it is to remove
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all make a difference.
Asking for a quote
Before you ask for a quote, have a think about:
- Photos by email, if that’s easy
- What the problem is, such as mould, gaps, leaks or cracking
- Any previous sealing or DIY work
- Access, such as stairs, a lift or height
Want a quote for sand mastic? Please phone 0345 464 0079 or drop us an email and tell us about the job. We’ll explain what we’d do and give you a clear price before any work starts.
Why it’s worth doing now in Liss
Replacing sash windows is a big decision for a period home, and in listed buildings it may need consent. If the frames are sound, renewing the mastic deals with gaps and draughts at the surround. Around Liss, water from a failed joint in an older home can soak into timber and plaster, which is far harder to put right than the sealant itself.
Combining jobs into one visit is usually more efficient than separate visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
What you get with us
- Anti-fungal silicone where joints get wet
- We’re fully insured
- 12-month guarantee on every job
- Old sealant always removed completely
Read our cost guide and our reviews.
How the visit works
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, carry out the job and clear up. It generally takes a few hours for a single window, longer for several. A visit to Liss is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Before we arrive
- Keep children and pets away from the work area
- Try not to wet indoor joints just before the visit
- Tell us about access, such as stairs, a lift or high-level joints
How to get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job. Whenever you are ready, call 0345 464 0079 or send us an email.
Related advice
Do you need sand mastic in Liss?
Timber swells and shrinks with the weather. The movement cracks the mastic little by little.
Look out for any of the following:
- Patchy fillers round a sash window
- Wind and rain getting in round a sash window
- Tired mastic found when preparing windows for paint
- Gaps between timber frames and stone or brick
For an older house near a landmark such as Church of St Mary, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
What your quote should include
- What happens if they find a problem under the old sealant
- How the joint is cleaned and prepared
- How the colour is chosen
- Who does the work, and how experienced they are