Construction Mastic in Great Thorness
Mastic packages for new-build and refurbishment projects in Great Thorness. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Early adhesion failures on new external joints
- Inconsistent sealant finishes from plot to plot
- Missed perimeter joints on a new elevation
Construction mastic in Great Thorness
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
About our construction mastic in Great Thorness
Refurbishment work needs a slightly different approach from new build. Existing joints have to be stripped back to sound faces, because fresh sealant can’t key into cured silicone, and on older buildings we ask for the asbestos survey before disturbing anything. New and existing joints then get the same preparation. If you have a long mastic snag list close to completion and failed sealant in an existing building being refurbished, we can put it right, on brick and block movement joints, internal decorators’ caulk and sanitary and kitchen joints alike. A specialist sealant contractor works differently from a general builder: in Great Thorness, that means joint design, primers and backing rod as standard.
For a site near Great Thorness, the mastic visit is planned so the right sealants, primers and backing rod are on hand, timed to the stage the job has reached. Send drawings or photos and the programme and we’ll quote to suit.
Work we carry out comes with a 12-month guarantee. Should something we installed fail, speak to us on 01277 525 020 or email us and we will come back to it.
- Where
- Great Thorness (PO31)
- Wider area
- Isle of Wight
- Guarantee
- A 12-month guarantee
- Quotes
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Updated
- 3 November 2026
Quoting for work in Great Thorness
Sealant work doesn’t have a standard rate, because every site is different. What we take into account:
- Joint width, depth and condition
- Any access equipment needed
- The total length or number of joints
- Specialist products, such as fire-rated or hygienic sealants
A quote for mastic packages depends on how many there are, their condition and the access. Ask us for a fixed quote.
What to include in your enquiry
To price the job accurately, we need a clear picture of the site. Useful things to include:
- What the building is and how it’s used
- Any specification or named product
- Anything awkward about access or site hours
- Clear photos of the problem areas
Pricing a project or setting a maintenance budget? We’ll quote against your scope and drawings that you can work with. If you have questions first, call 01277 525 020 or email the details over.
Maintenance after handover
After handover, a little attention goes a long way:
- Plan external elevations with the weather in mind
- Protect sealed areas from following trades
- Put any product change through the designer first
- Check frame gaps are within the sealant’s range before sealing
At handover, keep the product details with the O&M information. That helps the building owner maintain the joints later. Tell us what records you need and we will confirm with the quote.
Leaving the mastic snag list to the end squeezes everyone. Clearing snags area by area spreads the work out, and avoids a rush.
FAQs: Great Thorness
Is hospital work, at somewhere like Mr Rohan Sawant (St Mary’s Hospital), something you do?
Yes. We work in healthcare settings as well as offices and schools. Each area is agreed with the ward or department and the estates team in advance.
Is Great Thorness off your patch?
No. Places such as Great Thorness are covered as much as the big towns. London and every South East county are within our area. Send photographs and a list of what needs doing, and we’ll plan the job to need as few trips as possible.
Can the building stay open while you work?
Yes, as long as we plan it. Tell us your site hours and access windows and we’ll plan around them.
Are you CHAS accredited?
Our applicators are CSCS-carded, and we hold CHAS accreditation and Constructionline membership. We confirm any paperwork you need with the quote.
Do you work to architects’ specifications?
Yes. Send it with your enquiry, and the quote will be based on it.
What happens if the weather stops external sealing?
Outside, the joint has to be dry and the temperature within the product’s limits. Damp, frost or condensation on frames can stop work.
How do you work with the site programme?
We work to your programme. Tell us the sequence and we’ll plan applicators around it, sealing as areas become ready.
Contractors’ notes for Great Thorness
The sea is no more than about 1 mile from Great Thorness. Coastal exposure means perimeter and cladding joints work harder than on an inland job, which puts weight on correct joint sizing, priming and a sealant suited to the exposure. Great Thorness sits in one of the drier corners of the country, the South East. That doesn’t stop wet spells, or frosty starts that leave panels too damp to seal, so we time external mastic for dry faces and agree it with the site team.
Hospital estates such as Mr Rohan Sawant (St Mary’s Hospital), 2.8 miles to the south-east of Great Thorness, tend to grow and change in phases, often next to occupied wards, so facade and perimeter sealing has to fit the estates team’s plan. For contractors refurbishing units at places like Porchfield Business Park (1.7 miles south-west of Great Thorness), the mastic covers cladding panels, roller-door and window perimeters. With historic properties like Swainston Manor (3 miles south of Great Thorness) in the area, refurbishment work often meets old masonry that needs compatible sealants.
Great Thorness is about 3 miles south-west of Cowes, in the Isle of Wight. Great Thorness sits inside our coverage, with the same fixed quotes and 12-month guarantee as everywhere else. Across the Isle of Wight, 125 places are covered, Great Thorness among them. Sites around Southampton have their own page, about 13 miles away.
Postcode districts covered here: PO31 for mastic packages. Close to Great Thorness, our area also takes in Porchfield (1 mile south-west), Locksgreen (1 mile south-west), Rew Street (2 miles north-east), Newtown (2 miles south-west) and Northwood (2 miles north-east). Nearby towns on our patch include Newport (3 miles south-east), Ryde (9 miles east), Cowes (3 miles north-east), Sandown (10 miles south-east), Shanklin (10 miles south-east) and Ventnor (11 miles south-east). Remote and island addresses take more planning, from travel and ferries to the weather, so give the site location in your enquiry.
Around Great Thorness
Around Great Thorness, our work takes us to commercial buildings near Sportsman's Rest pub and the streets around them. Other landmarks nearby include Carisbrooke Castle (3.5 miles south-east) and St Mary's Hospital (2.8 miles south-east). For a walk, there’s Mill Hill.
Nearby places to Great Thorness
More services for Great Thorness
Leave it or put it right?
It helps to bring the mastic subcontractor in before the package is urgent. Early involvement means gaps, products and access are sorted before the programme bites. Called in at the end, the same issues surface during handover. Older rural buildings around Great Thorness move with the seasons, and rigid or tired sealant can’t keep up. The right product, sized to the joint, copes much better.
Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits.
Why us?
- CHAS accredited contractor
- Work carried out by CSCS-carded applicators
- Products installed to the manufacturer’s instructions
- Standard and matched colours in many product ranges
See what affects the cost and our accreditations.
How a job runs
We schedule the visit to fit the site hours and access windows you give us. On the day, the work area is kept contained and tidy, and your contact hears from us before we move to the next area. Rural sites near Great Thorness may need directions, gate codes or a contact on site. Add it to your enquiry and we’ll build it into the plan.
- We start with the drawings, specification and programme.
- We take off quantities and return a fixed quote.
- We agree with the site team which areas come first.
- Each area is sealed when it’s released.
- Every joint is cleaned, set to depth and sealed with the specified product.
- After snagging, the work is handed over under our 12-month guarantee.
Getting the site ready
- Agree which areas must stay open
- Let us know about inductions and permits
- Warn occupants and staff about the work
Request a quote
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to speak to us on 01277 525 020 or send details through our quote form with what you know.
Related advice
Surface by surface
External facade and movement joints
External movement joints often need primer, depending on the substrate. We prime where the manufacturer specifies.
Snagging before handover
Snagging is often the final mastic stage. We can work through the snag list area by area.
General trades versus a specialist
There’s also the paperwork. Many sites expect CSCS cards, RAMS and proof of insurance, and we’ll confirm the paperwork you need with the quote.
Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.