Essex · England
New-build mastic & snagging in Cock Street, Essex
Specialist new build mastic for Cock Street: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Internal frame sealant that has split
- Sealant applied over dusty or wet surfaces
- Gaps between new skirting and floors
Cock Street questions
Is Cock Street in your area for new build mastic?
Yes, Cock Street is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or email us with a few details of the job, and we’ll give you a clear price.
Can you help a landlord with a rental near Bures station?
Yes. We work for landlords and letting agents as well as homeowners. You can call 0345 464 0079 or send us an email with the details for a clear quote.
Is the work guaranteed?
Yes. There’s a 12-month guarantee on every job, wherever you are.
Can you reseal over the builder’s sealant?
No. Fresh silicone does not stick to the old layer, so sealing over the top fails quickly. The old sealant always comes out first.
Can you do plot mastic on a new development?
Yes. We work through plots to your schedule, room by room. Get in touch with the number of plots and the scope and we will quote.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us, and we’re fully insured.
Where is Mr Mastic based?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
How long should I leave it?
It depends on the product. We tell you how long to leave it before we go.
About our new build mastic in Cock Street
Snagging sealant properly means taking the failed bead out completely. Fresh silicone cannot bond to the old layer, so the joint is cut out, cleaned, dried and resealed. We are often asked to deal with shower seals failing in the first year or two and smeared, uneven beads picked up at snagging, across windows & doors, show homes and kitchens.
Work in a small place like Cock Street just needs the journey and access planning, and the work itself is the same as on any site.
There’s a 12-month guarantee on every job, whatever its size.
- Place
- Cock Street (CO6)
- Wider area
- Essex
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Also near Cock Street
Other services in Cock Street
What new build mastic looks like in Cock Street
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you’ve bought a new home near Bures station, the sealant around baths, showers and frames is worth checking in the first year or two.
Cock Street is in Essex. Whether you are in the middle of Cock Street or further out, we cover new build mastic for every kind of property, from flats and houses to offices and hotels. 644 places in Essex are on our list. Our Chelmsford page covers work nearby.
Our applicators cover all of CO6 for new build mastic and the streets around it. We also cover Leavenheath (1 mile west), Stoke-by-Nayland (1 mile east), Nayland (1 mile south-east), Wissington (2 miles south) and Little Horkesley (3 miles south). Larger places within reach include Colchester (7 miles south), Braintree (15 miles south-west), Camulodunum (7 miles south), Halstead (10 miles west), Greenstead (8 miles south-east) and Tiptree (13 miles south).
Around Cock Street
In Cock Street, that means homes and buildings near Lion pub. Cock Street’s nearest station is Bures station, roughly 4 miles west. Nearby you will also find Mount Bures (4.3 miles south-west) and Severalls Hospital (5.3 miles south). The countryside around Cock Street includes Arger Fen.
Signs you need new build mastic in Cock Street
The wrong product is sometimes used in the wrong place: caulk where water collects, or a rigid product on a moving joint. Neither lasts long.
Look out for any of the following:
- Skirting joints opening in the first winter
- Internal frame sealant that has split
- Gaps opening as the house dries out and settles
- Kitchen sealant that has pulled off the wall
In and around Cock Street, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
What to look for in a quote
- Is VAT in the price?
- What product goes in the joint
- How the colour is chosen
- How the surfaces are prepared before sealing
What the job involves on each surface
Kitchens
As a new house dries, worktops and walls shift a little, opening gaps behind the upstand. We reseal them with a flexible sealant.
Skirting and floors
New homes often develop a gap between skirting and floor. We seal it with a flexible sealant that copes with the movement.
How it works
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. Typically it takes anything from a few hours to several days, depending on the number of plots. Somewhere like Cock Street needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- Each joint is checked for movement before work begins.
- Old sealant is cut out and the joints cleaned.
- Joints are dried and primed where the product calls for it.
- Baths are filled with water, then the new sealant is applied.
- We check every joint and leave you with the cure times.
How to prepare
- Mention any leaks or damp you’ve noticed
- Plan for the work area to be out of bounds to pets and children
- Let us know about parking restrictions
Getting a quote
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or send us an email.
Related advice
What happens if it’s left?
DIY kits do not solve the main problems with new-build sealant: dust, no primer and old sealant left in the joint. Cutting out, cleaning and priming are what make the difference. In a small place like Cock Street, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, along with when we can work on site. Call for a quick quote and we’ll explain what it covers.
What you get with us
- Every job guaranteed for a year
- Fully insured
- 4.9 on Google from 180+ five-star reviews
- A choice of colours where the product allows
See our cost guide or customer reviews.
Can I do it myself?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Use the extractor fan every time you shower
- Avoid running a DIY bead over the old one
- Do not wait for the house to settle if water is getting through
- Wait for the cure time before using a resealed shower
Keep an eye on the joints over the first couple of years. Small gaps can appear as the house dries and can be resealed later.
Lifting sealant traps moisture and mould behind it. Dealing with it before it goes black saves a harder job later.
How we quote for new build mastic
The quote reflects the job in front of us. We take into account:
- Any working-time requirements on site
- Access and height
- Whether there’s mould to deal with
- The number and length of the joints
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are unsure, ring 0345 464 0079 or drop us an email for an honest opinion and a quote.
Asking for a quote
To make quoting easier, let us know:
- The rough size of the job
- The type of property
- Photos by email, if that is easy
- The problem you’ve noticed
Every job is quoted individually. Simply call 0345 464 0079 or email us and describe the job.