Hampshire · England
Sand mastic for sash & case windows in Liss Forest, Hampshire
Sand mastic across Liss Forest and nearby, with every bit of old sealant taken out first and a one-year guarantee.
- Mastic dropping out of the joint
- Gaps where the frame meets the masonry
- A silicone bead on a sash window that spoils the look
DIY versus a professional finish
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.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Sand mastic in Liss Forest
Across Liss Forest, we renew sand mastic around sash and case windows. Every joint is cleaned out and filled by hand for a neat, traditional finish. We work on tenement windows, sash and case windows and stone surrounds, and common reasons people get in touch are mastic that needs renewing before redecorating and old sand mastic that has cracked, crumbled or fallen out.
Outdoor sealant needs dry, clean surfaces, so work on frames around Liss Forest is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
Our work is backed for twelve months, in Liss Forest and everywhere else we cover.
- Location
- Liss Forest (GU33)
- Region
- Hampshire
- Cover
- A year, on every job
- Quote
- A clear price before we start
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Other services in Liss Forest
What affects the quote in Liss Forest
Some jobs are bigger than they look, and some smaller. The main factors:
- Mould in or behind the old joints
- How many rooms, windows or areas are involved
- The type of sealant required
- The amount of work
Combining jobs into one visit is generally more efficient than separate visits. You will get one clear quote for the whole job.
Helping us quote
When you call or email, it’s useful to know:
- Whether it has been sealed before
- The problem you’ve noticed
- How we’d reach the joints
- Pictures of the joints, sent by email
Want a quote for sand mastic? Please phone 0345 464 0079 or drop us an email with a few details. We will explain what we’d do and give you a clear price before we start.
Liss Forest questions
I let a flat near Liss station. Can you help?
Yes. We work for landlords and letting agents as well as homeowners, and several properties can go on one quote. Just ring 0345 464 0079 or email us with the address and what needs doing, and we’ll send you a clear quote.
Do you cover Liss Forest for sand mastic?
Yes, Liss Forest is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or send us an email with a few details of the job.
Do you guarantee sand mastic work?
There’s a 12-month guarantee on every job.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status and we’re fully insured too.
Can I do it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
What exactly is sand mastic?
It’s a mix of sand and a linseed-oil-based binder. It’s applied by hand and finished to sit neatly against the masonry.
Can you match the sealant colour?
In most cases you can choose. We’ll tell you which colours the right product comes in.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. Working times can be discussed when we quote.
Signs you need sand mastic in Liss Forest
Shallow joints are a common cause. A thin layer doesn’t hold well so we make sure the new mastic is the right thickness.
Signs it’s time to call us include:
- Gaps where the frame meets the masonry
- Mastic worn away on windows facing the weather
- Old cement repairs round a window that have failed
- Mastic dropping out of the joint
If you look after a building such as Liss Infant School, its window and door frames need their mastic kept sound, just like a home’s.
What your quote should include
- Are they insured?
- Whether you can choose the colour
- The length of the guarantee
- Who turns up on the day
What the job involves on each surface
Brick reveals
We rake out the old mastic and pack deep voids before pointing.
Period and listed homes
Materials matter on listed and conservation-area homes. Sand mastic is often the preferred finish.
What happens if it’s left?
A silicone bead can be quicker, but it can look wrong on a period surround. Sand mastic suits the building and finishes neatly against the masonry. Where a wall is exposed, as many are in small places like Liss Forest, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
The cost reflects the work involved, not a rough estimate. That’s why we ask about the job first and send you a clear quote before any work starts.
Why book with us
- Rated 4.9 stars on Google
- 20+ years of sealant experience
- An ARBOMaster approved applicator
- Sanitary silicone with an anti-fungal additive in wet areas
See our cost guide or customer reviews.
Sand mastic in Liss Forest: local notes
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Rented homes near Liss station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. In the older streets around St Saviour's, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Liss Forest is about 4 miles north-east of Petersfield, in Hampshire. Liss Forest gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. 683 places in Hampshire are on our list, large and small. We also work in Portsmouth, about 19 miles from Liss Forest.
Our applicators cover all of GU33 for sand mastic. We cover properties on Forest Road, Warren Road and Newfield Road. Close by, we work in The Mint (1 mile south-east), Liss (1 mile south), West Liss (1 mile south), Greatham (1 mile north) and Rake (1 mile south-east). Further out, we also cover Havant (14 miles south), Fleet (15 miles north), Horndean (11 miles south-west), Aldershot (14 miles north), Alton (8 miles north-west) and Waterlooville (13 miles south-west).
Near you in Liss Forest
Around Liss Forest, our work takes us to homes and buildings near The Temple Inn, among other places. For rail, the closest station is Liss station, about 0.7 miles south-west of the centre. A little further out are Chase Community Hospital (3.8 miles north) and The Romany Museum (3.7 miles north-west). Not far away are Liss Riverside Railway Walk North and Wheatham Hill.
How to look after the new joints
Simple care keeps the joints in good condition. We recommend:
- Look over the window mastic once a year
- Sort the mastic before the decorators arrive
- Get any rot dealt with first
- Make sure water runs off the sill
Check the mastic when you check the paintwork. Small cracks are easier to deal with early.
Sound mastic protects the frame. Failed mastic lets water reach the timber and timber that stays wet can rot.
How it works
All our tools and materials come with us in the van, so there’s nothing for you to buy. After a quick look at the joints together, the area is protected and the work begins. It normally takes a few hours for a single window, longer for several. Somewhere like Liss Forest needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- First, we look at the surrounds with you and agree what needs doing.
- Old, loose mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- The mastic is mixed, pressed into the joint by hand and shaped.
- We dress the surface so it sits neatly against the masonry.
Preparing for the visit
- Mention if the joints have been sealed before
- Let us know about parking restrictions
- Mention any leaks or damp you’ve noticed
How to get a quote
We do not publish a price list, because every job is different. Instead, we send you a clear quote for your job. To arrange one, ring 0345 464 0079 or send us an email.