Hertfordshire · England
Little Almshoe Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Little Almshoe, with a one-year guarantee on every job. Ask us for a quote.
- Gaps round a timber door in stone or brick
- Gaps where the frame meets the masonry
- Old cement repairs round a window that have failed
Work for landlords, hotels and businesses
If you manage several properties in or around Little Almshoe, several properties can be quoted together. Just tell us the addresses and what each one needs.
We work for letting agents and landlords as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
About our sand mastic in Little Almshoe
Sand mastic doesn’t last for ever and gaps open up round the frame. Renewing it closes the gap so the surround looks right again. Common call-outs are for gaps round a timber door in stone or brick and draughts and rain around sash boxes, across timber door frames, tenement windows and brick reveals.
Mastic can only go onto a dry, clean joint, so window work in Little Almshoe is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
Each job carries a 12-month guarantee, large or small.
- Where
- Little Almshoe (SG4)
- Region
- Hertfordshire
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Windows and doors in Little Almshoe
Historic houses like Knebworth House (about 3.8 miles south-east) are a reminder that the area around Little Almshoe has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. 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.
For landlords with property near Hitchin station, cracked sand mastic around sash windows lets in the draughts tenants complain about. Managing a site like St Ippolyts Church of England Aided Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages.
Little Almshoe is about 2 miles south of Hitchin, in Hertfordshire. If you need sand mastic in Little Almshoe, please call 0345 464 0079 or drop us an email for a quick quote. We’re based in Crawley and cover Hertfordshire, Little Almshoe included. Across Hertfordshire, we cover 381 places, and Little Almshoe is one of them. You can also see our page for London, about 30 miles away.
Every address in SG4 is within our area for sand mastic. Other places close to Little Almshoe include St Ibbs (1 mile north), Sperberry Hill (1 mile north), St Ippolyts (1 mile north), Gosmore (1 mile north-west) and Poynders End (1 mile south-west). We also work in nearby towns such as Hemel Hempstead (14 miles south-west), Stevenage (3 miles east), St Albans (12 miles south), Welwyn Garden City (9 miles south), Harpenden (8 miles south-west) and Hoddesdon (15 miles south-east).
What’s near Little Almshoe
Typical jobs here are in homes near The Rusty Gun pub, Hitchin Girls' School and Kingshott School. The closest station to Little Almshoe is Hitchin station, about 2.2 miles north of the centre. Well-known places in the area include Lister Hospital (2.1 miles east) and Wymondley Castle (1.9 miles north-east). The countryside around Little Almshoe includes Purwell Ninesprings and Markham's Hill.
DIY versus a professional finish
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
The process
Most of a good job is in the preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. In total, it generally takes a few hours per window, depending on the condition of the joints. In a small place like Little Almshoe, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by checking each surround and agreeing the joints to renew.
- Old, loose mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
How to prepare
- Let us know about earlier repairs to the joints
- Plan for the work area to be out of bounds to pets and children
- Try not to wet indoor joints just before the visit
Getting a quote
We do not publish a price list, because every job is different. Instead, we give you a clear quote for your job. To arrange one, call 0345 464 0079 or drop us an email.
Advice
How we quote for sand mastic
There’s no set price list. What we look at:
- The old material and how stubborn it is
- The product the joint needs
- Working hours on commercial sites
- Mould in or behind the old joints
We don’t show prices on the website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or drop us an email and we will talk you through it.
What to tell us for a quote
You do not need to know the technical terms. It helps if you can tell us:
- Access, such as stairs, a lift or height
- Any previous sealing or DIY work
- If it’s domestic, commercial or a hotel
- Photos by email, if that’s easy
Want a quote for sand mastic? Please call 0345 464 0079 or email us with a few details. You will know what we plan to do, and what it will cost, before any work begins.
Questions from Little Almshoe
I let a flat near Hitchin station. Can you help?
Yes. We work for landlords and letting agents as well as householders, and several properties can be quoted together. Just ring 0345 464 0079 or send us an email with the address and what needs doing, and we’ll send you a clear quote.
Is Little Almshoe in your area for sand mastic?
Yes. Our work covers London and the South East, and Little Almshoe is part of that. Just call 0345 464 0079 or send us an email with a few details of the job.
Can you do several jobs on one visit?
Yes, and it often makes sense. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
Do I have to be there?
It depends on the job. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
Are you fully insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
Do I need permission for sand mastic on a listed building?
It’s best to ask your local planning authority first. Sand mastic is often favoured as like for like but the decision is theirs.
How long does sand mastic take to harden?
Not straight away. It skins first and hardens fully later and we’ll give you an idea for your job.
Are you an approved applicator?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
Common problems we fix in Little Almshoe
Most of it is simply age. Sand mastic is a maintenance item like any pointing and how long it lasts depends on the weather it faces.
Most people get in touch after spotting something like this:
- A silicone bead on a sash window that spoils the look
- Wind and rain getting in round a sash window
- Gaps where the frame meets the masonry
- Mastic dropping out of the joint
If you live in an older home near Church of St Ippolyts (church of England), replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Comparing quotes
- Which colour the sealant will be
- How much experience the applicator has
- Whether the sealant suits the joint
- Is VAT in the price?
Looking after it afterwards
So the new joints stay in good condition:
- Don’t paint over the new mastic
- Keep modern sealant off the mastic
- Clear gutters so water does not pour onto the windows
- Have rotten timber repaired before new mastic goes in
Avoid painting over the new mastic, as traditional guidance advises. Ask us before any decorating around it.
Sound mastic protects the frame. Failed mastic lets water reach the timber, which can lead to rot.
Places near Little Almshoe
More services for Little Almshoe
Why act early in Little Almshoe
If you are redecorating, renew the mastic first. Paint over cracked mastic will not stop the gaps, and the new mastic is traditionally left unpainted. In a small place like Little Almshoe, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference.
Why Little Almshoe clients choose us
- 180+ five-star Google reviews
- Neat joints and a tidy finish
- Arbo and Everbuild products
- Over 20 years’ experience
See how sealant jobs are priced and our reviews.