Hertfordshire · England
New-build mastic & snagging in Todd's Green, Hertfordshire
Plot mastic for developers and snagging failed sealant in new homes for Todd's Green, backed by a one-year guarantee. Ask us for a quote.
- Frame joints opening as the plaster dries
- Untidy sealant flagged on a snagging list
- Gaps between new skirting and floors
New build mastic in Todd's Green, done properly
We carry out plot mastic and second-fix sealing for builders, and snagging reseals for new-home owners. Both get the same care over preparation, because that is what rushed new-build sealant normally lacks. Typical jobs include shower seals failing in the first year or two and sealant applied over dusty or wet surfaces, on bathrooms & en suites, plot handovers and show homes.
In a village or hamlet like Todd's Green, new homes are more likely to be a barn conversion or a handful of houses than a big estate. Every one needs its sealant and floor joints done properly, whatever the size of the site.
We stand behind the work with a 12-month guarantee, so you are not left on your own once the job is done.
- Place
- Todd's Green (SG1)
- Wider area
- Hertfordshire
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll quote.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.
Different surfaces, different methods
Show homes
Bathrooms, kitchens and frames in show homes are sealed or resealed to a neat finish. Tell us when the home is open so we can plan around it.
Plot handovers
Good preparation at handover saves snagging later. Dust from the build is removed first.
The process
On the day, there’s very little for you to do. Point us to the joints and we’ll get on with it. The work itself takes anything from a few hours to several days, depending on the number of plots, including the tidy-up. Somewhere as small as Todd's Green, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by agreeing which joints are on the list, from the snagging sheet or plot schedule.
- Failed or untidy sealant is cut out completely.
- Surfaces are cleaned of building dust and primed where needed.
- A sealant chosen for each area goes in and is tooled smooth.
- Each area is checked and left with its cure time.
Getting ready for the visit
- Mention any tricky access
- Tell us if parking is tricky
- Where the joints are inside, avoid wetting them before we arrive
Getting a quote
If you’re in Todd's Green and need new build mastic, phone 0345 464 0079 or email us. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Read more
Nearby places to Todd's Green
What else we do in Todd's Green
New homes and floors in Todd's Green
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you’ve bought a new home near Stevenage station, the sealant around baths, showers and frames is worth checking in the first year or two.
Todd's Green is about 2 miles north-west of Stevenage, in Hertfordshire. We provide new build mastic to homes and businesses in Todd's Green and the surrounding area. Our Hertfordshire coverage runs to 381 places, and Todd's Green is one of them. We also work in London, about 30 miles from Todd's Green.
Jobs for new build mastic in SG1 works the same way as everywhere else we cover. We also cover the places around Todd's Green: Lower Titmore Green (1 mile west), Titmore Green (1 mile west), Little Wymondley (1 mile north-west), Graveley (1 mile north-east) and Great Wymondley (1 mile north). Within a short drive, we also cover Hemel Hempstead (15 miles south-west), St Albans (13 miles south), Welwyn Garden City (9 miles south), Harpenden (9 miles south-west), Hitchin (3 miles north-west) and Hoddesdon (15 miles south-east).
Near you in Todd's Green
Typical jobs here are in homes near Hermit of Redcoats pub and Graveley Primary School and the streets around them. For rail, the closest station is Stevenage station, roughly 1.7 miles south-east of the centre. A little further out are Lister Hospital (0.6 miles east) and Stevenage Museum (1.9 miles south-east). Green spaces nearby include Purwell Ninesprings.
How to look after the new joints
Aftercare is simple:
- Ventilate bathrooms well, especially in the first year
- Keep water off fresh sealant until it has cured
- Look at the sealant regularly in the first couple of years
- Report sealant problems to your builder during the snagging period
Follow the cure time we give you before the area gets wet. Silicone is usually left for about a day to cure enough for use.
A seal that splits early is often a sign of movement. Getting it resealed properly, and any movement checked, stops it recurring.
What affects the quote in Todd's Green
Some jobs are bigger than they look, and some smaller. The main factors:
- How many rooms, windows or areas are involved
- The old material and how stubborn it is
- Mould in or behind the old joints
- The number and length of the joints
What it costs depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before any work starts, so you know where you stand.
Asking for a quote
Before you ask for a quote, have a think about:
- Pictures of the joints, sent by email
- What the problem is, such as mould, gaps, leaks or cracking
- The type of property
- Roughly how big the job is
Getting a quote is simple: let us know the job and the location and its rough size. Photos by email help us understand the job, and we’ll take it from there.
What sealant work can’t fix
A few problems are outside what sealant work can do:
- A tray or bath that is not properly supported, until it’s fixed
- Disputes or warranty claims with your builder
- Leaks from pipes, valves or wastes, which need a plumber
Not sure which it is? You can call 0345 464 0079 or drop us an email and we will tell you honestly.
Joints and surfaces we work on
- Plot handovers
- Windows & doors
- Skirting & floors
- Kitchens
- Bathrooms & en suites
- Show homes
Questions from Todd's Green
I let a flat near Stevenage station. Can you help?
Yes, landlords and agents are among the people we work for. You can phone 0345 464 0079 or email us with the details for a clear quote.
Can you do new build mastic in Todd's Green?
Yes, Todd's Green is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job, and we’ll give you a clear quote.
What do you put in the joint?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We explain the product when we quote.
Do you take on second-fix sealing for builders?
Yes. We work through plots to your schedule, room by room. Tell us the plots and the joints involved and we will quote.
Do you have insurance?
Yes. Mr Mastic is fully insured.
Can new sealant go on top of the old bead?
No. Fresh silicone does not stick to the old layer, so it soon lifts and traps water. We cut the old bead out completely.
Is it messy?
Tidy work is part of the job. We protect what’s around the joints, and we clear up when we’re done.
Should I try DIY first?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Common problems we fix in Todd's Green
New homes are full of moisture from plaster, screed and concrete, which takes a year or two to dry out. As it does, timber shrinks and joints open and the sealant has to cope with the movement.
Keep an eye out for any of the following:
- Cracked caulk along new skirting
- Sealant applied over dusty or wet surfaces
- New-build shower sealant that has already split
- Kitchen sealant that has pulled off the wall
In and around Todd's Green, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Before you book anyone
- Whether all the old sealant comes out first
- How long the guarantee is
- What the cure time is
- What happens if the job turns out different