Hampshire · England
Sand mastic for sash & case windows in Farringdon, Hampshire
Sand mastic for Farringdon and the surrounding area: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Patchy fillers round a sash window
- Failed mastic on an exposed elevation
- Gaps round a timber door in stone or brick
Farringdon homes and the weather
Historic houses like Bentworth Hall (about 3.7 miles north-west) are a reminder that the area around Farringdon has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you live in an older home near Church of All Saints, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Farringdon is about 3 miles south of Alton, in Hampshire. If you need sand mastic in Farringdon, it’s easy to get a quote: please call 0345 464 0079 or drop us an email. We cover Hampshire from our Crawley base. Farringdon is one of 683 places in Hampshire where we work. There’s also a page for Portsmouth, about 21 miles away.
We cover every part of GU34 for sand mastic. Sand mastic is available to properties on Hall Lane, Crows Lane and Gaston Lane. Neighbouring places we cover for sand mastic include Upper Farringdon (1 mile north-east), Lower Farringdon (1 mile west), Chawton (2 miles north), Hartley Mauditt (2 miles east) and Alton (3 miles north). Within a short drive, we also cover Basingstoke (12 miles north-west), Winchester (15 miles west), Fleet (13 miles north-east), Horndean (14 miles south), Aldershot (14 miles north-east) and Petersfield (8 miles south).
Near you in Farringdon
Around Farringdon, our work takes us to homes and buildings near Rose and Crown Inn. For rail, the closest station is Alton station, roughly 3 miles north of the centre. Other landmarks nearby include The Romany Museum (2.3 miles south-east) and Alton Community Hospital (2 miles north). Green spaces nearby include Selborne Hill.
Sand mastic in Farringdon, done properly
We renew sand mastic around sash windows and doors in stone and brick. Out comes the old, loose mastic, the joint is prepared and new mastic is shaped by hand. We work on timber door frames, tenement windows and stone surrounds, and people most often call us about a silicone bead on a sash window that spoils the look and mastic worn away on windows facing the weather.
Outdoor sealant needs dry, clean surfaces, so work on frames around Farringdon is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
Each job carries a 12-month guarantee, large or small.
- Location
- Farringdon (GU34)
- Region
- Hampshire
- Cover
- One year on every job
- Quotes
- A clear price before work begins
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Should I try it myself first?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Places near Farringdon
What else we do in Farringdon
Why it’s worth doing now in Farringdon
Gaps round a sash window let in rain and draughts. Water can get to the frame and the masonry so renewing it early protects the window. Around Farringdon, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
What it costs depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before we start.
Why book with us
- Old sealant always removed completely
- Trusted Arbo and Everbuild sealants
- Neat joints and a tidy finish
- ARBOMaster approved applicator
Read how sealant jobs are priced and customer reviews.
How we quote for sand mastic
Call for a quick quote. What matters most is:
- Working hours on commercial sites
- Whether the work is at height
- The size of the job
- Mould in or behind the old joints
We do not show prices on the website, because each job is priced on what it involves. Call for a quick quote.
Asking for a quote
Photos by email are helpful but not essential. Please mention:
- A few photos by email, if you can
- Access, such as stairs, a lift or height
- If it’s domestic, commercial or a hotel
- The address or postcode of the job
Getting a quote is simple: tell us what needs doing and where, and roughly how big it is. Photos by email help us understand the job, and we’ll come back to you with a quote.
How to look after the new joints
Aftercare is simple:
- Clear gutters so water doesn’t pour onto the windows
- Ask the planning authority about consent for listed or conservation-area homes
- Do not paint over the new mastic
- Avoid patching sand mastic with silicone
Make sure water drains away from the window surround. Water sitting against the mastic shortens its life.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens as more mastic falls out.
Common questions in Farringdon
Do you cover smaller places like Farringdon?
Yes. Farringdon is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is Farringdon in your area for sand mastic?
Yes, Farringdon is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or email us and tell us what needs doing.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and you’ll get one quote.
How long does sand mastic take to go off?
The surface skins quite quickly and it hardens fully over a longer time. Timing depends on the weather and the joint.
Can you work on commercial sites?
Yes. Hotels, offices and other businesses use us and we are fully insured.
Is there any odour?
Some sealants have a smell while they cure. Ventilation helps.
How long will you be here?
A typical job takes a few hours per window, depending on the condition of the joints, including the preparation. Your quote will say how long we expect yours to take.
Which is right for my windows, sand mastic or modern sealant?
We’ll help you decide. Sand mastic suits many period homes and newer frames suit modern sealant.
What we are called out for in Farringdon
Scraping and sanding before painting can loosen old mastic. It’s often found when windows are being prepared for paint, which is a good time to renew it.
The problems people normally mention when they call include:
- A silicone bead on a sash window that spoils the look
- Mastic round period door frames that has failed
- Crumbling sand mastic round a window
- Wind and rain getting in round a sash window
Letting a property close to Alton station? Then any sash windows need sound mastic to keep draughts and rain out.
Comparing quotes
- What guarantee comes with the work
- What preparation is included
- When the joint can take water or movement
- What happens if they find a problem under the old sealant
Surface by surface
Sash and case windows
The mastic round a sash window is on show so we finish it carefully.
Stone surrounds
Old stone surrounds are often uneven, so the gap isn’t the same all the way round. Sand mastic is shaped by hand to suit.
The process
On the day, we start by going over the job with you. Surfaces next to the work are protected before any work begins. The work generally takes anything from a few hours to a full day, depending on how many windows. Somewhere like Farringdon 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.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic is not too thick.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
How to prepare
- Let us know about stairs, lifts or work at height
- Try not to wet indoor joints just before the visit
- Mention if the joints have been sealed before
Getting a quote
There’s no standard price list, because every job is different. Instead, we give you a clear price for your job. To get started, call 0345 464 0079 or email us.