Sefton Coast
Mastic Man & Sealant Contractors in Crosby
Looking for a trusted mastic man in Crosby? Next Level Sealants delivers high quality, precision silicone and mastic work led by Liam. We cover Crosby, Waterloo, Blundellsands and the surrounding Merseyside coast. We provide neat, durable mastic and sealant work for homes, landlords, commercial premises and construction projects in the Crosby area. Old sealant is always fully removed and we agree a fair, fixed upfront price before you book.
- 100% Old Silicone Stripped Out (Never Capped)
- 5.0★ on Google (54 Reviews) · L23 Coverage
- Exact Fixed Price Confirmed from Photos
- Written 5-Year Domestic Guarantee (Free Returns)
Bathrooms, Showers & Homes
Regrouting & Floors
Commercial Sites5.0 / 5 on Google
54 verified five-star reviews
Crosby
Regular domestic & commercial visits
£5m & £10m Insured
Full public & employers' liability
Fair & Fixed Price
Quick quote by phone or message
Site Qualifications & Accreditations
Certified for domestic homes, commercial sites, powered access and high-rise rope access
Who You Are Dealing With
Deal directly with Liam.From first quote to finished job.
No call centres. No subcontracted strangers. From your first WhatsApp photo quote to the final tooled bead of silicone, Director Liam Harrison oversees your job personally. For specialist tile restoration, Liam works alongside family craftsmen with over 22 years on the tools—ensuring every joint is immaculate.
Liam
· Lead Mastic Specialist · 8 Years ExperienceYour direct point of contact from quote to completion
22+ Years Trade Experience
· Grouting & ResealingTrusted family & senior specialists on the tools alongside Liam
Certified & Fully Insured
· Domestic & CommercialCSCS Gold, SSSTS, IPAF, PASMA, IRATA & NVQ L3 · £5m/£10m insured
Liam · Next Level Sealants
Silicone & Regrouting
UK Commercial Sites“Friendly, tidy and clearly takes a huge amount of pride in his work.”
See how colour-matched silicone looks on your surfaces.
1. Tap What You Need Sealing:
Tap any area to test surfaces & colours
Local Coverage · L23
How We Work Across Crosby
Crosby is well within our normal working area. We travel from our Liverpool base for domestic work, commercial programmes and smaller repair jobs along the coast and inland. For larger commercial, construction and high-level projects we also cover the wider North West.
Precision Workmanship · Direct With Liam
When you book Next Level Sealants in Crosby (0151 453 5755), you deal directly with Liam and our dedicated in-house specialists from your first photo or drawing quote right through to a clean, watertight finish.
Domestic & Commercial Scope in Crosby
What We Seal & Regrout in Crosby
- Bathroom and kitchen silicone resealing01
- Bathroom and shower tile regrouting02
- Window and door frame mastic03
- External mastic and weatherproofing04
- Commercial mastic and sealant programmes05
- Expansion and movement joints06
- Repairs and resealing of failed sealant07
Commercial Mastic Contractors · Crosby (L23)
Commercial Mastic, Fit Out & Site Packages in Crosby
Alongside domestic bathroom resealing and tile regrouting in Crosby, our CSCS, CITB SSSTS, IPAF and PASMA certified team can quote commercial mastic packages for main contractors, site managers, developers and facilities teams in Crosby (L23) and neighbouring Waterloo, Blundellsands, Formby, Maghull. We confirm crew availability, access, travel and programme against each project scope. Site RAMS, COSHH data sheets and insurance documents are available for the agreed work.
Local Specification Summary · Crosby
- Primary Postcode Area
- L23 & surrounding districts
- GPS Coordinates
- 53.4877°N, 3.0343°W
- Site Credentials
- CSCS Gold · SSSTS · IPAF · PASMA · IRATA · NVQ L3
- Nearby Coverage
- Waterloo, Blundellsands, Formby
5.0★ Across 54 Google Reviews
What Our Customers Say
“Great service no mess and and really professional job would definitely recommend them”
“Not sure what to expect as you don’t have this kind of work done very often. Absolutely great experience and first-class workmanship. So pleased we chose this company. Would recommend 100%.”
“Top workmanship and quality job sealing bathrooms on one of our projects. Will definitely use again in future.”
Completed Work
Selected Projects From Our Portfolio
Examples of completed work from our wider portfolio. The location for each project is shown on its card.
Straight Answers · Local Advice
Common Questions in Crosby
Practical details on quoting from photos, 24-hour curing times, full strip-out prep, and our 5-Year Domestic Guarantee across Crosby and nearby areas:
Do you cover Crosby for small domestic sealant jobs?+
Yes. We carry out bathroom reseals, kitchen silicone, window frame sealing and other domestic mastic work in Crosby and the surrounding coastal areas. Small jobs are welcome.
Can I send photos for a quote in Crosby?+
Yes. For most jobs, clear photos sent by WhatsApp, email or through the contact form are enough for us to provide a quote without a site visit.
Do you work on commercial properties in Crosby?+
Yes. We carry out commercial mastic, external weatherproofing and expansion joints for offices, retail, industrial and managed properties across Merseyside.
Can you replace black mouldy silicone around a shower or bath in Crosby?+
Yes. Once black mould penetrates beneath silicone, bleaching or surface scrubbing will not remove it. We mechanically slice away 100% of the mould-stained sealant in your Crosby home, sterilise the joint back to a dry substrate, and tool a crisp, antifungal trade silicone seal backed by our 5-Year Guarantee.
Can you fix a leaking shower tray or bath seal in Crosby?+
Yes. If water is escaping through split, peeling, or lifted silicone around your shower tray or bath edge, we extract the failed seal right back to bare tile, degrease the joint, and install a continuous watertight trade-grade silicone bead to protect your home from sub-floor water damage.
Do you reseal draughty or leaking UPVC window and door frames in Crosby?+
Yes. Perished external window and door mastic allows cold draughts, heat loss, and wind-driven rainwater into brickwork and reveals. We cleanly remove the cracked, decayed mastic and tool high-performance, weather-rated external frame sealant.
Is your domestic work in Crosby guaranteed?+
Yes. Every domestic silicone reseal in Crosby is backed by our official 5-year guarantee on adhesion and seal integrity. If our silicone ever peels, lifts, or detaches, send us a photo on WhatsApp and Liam will arrange a priority return visit completely free of charge (covers flexible silicone seals; rigid tile grout is excluded).
Complete Trade Directory
All Sealant & Regrouting Services in Crosby
Explore our full range of specialist domestic silicone, shower restoration, and commercial mastic packages delivered across Crosby and surrounding postcodes.
Commercial Mastic
Subcontract commercial mastic and joint sealing packages across Greater Manchester, Liverpool, Cheshire, and nationwide. CITB SSSTS supervision, CSCS skilled cards, £10m liability insurance, and zero-defect first-time handover sign-offs for main contractors and QSs.
Bathrooms & Kitchens
Precision bathroom, shower and kitchen silicone resealing across Liverpool, St Helens, Warrington, Wigan, the Wirral and the North West. We mechanically slice out 100% of black mouldy sealant, solvent-clean the joint, and hand-tool trade-grade sanitary silicone backed by our written 5-Year Guarantee.
Tile Regrouting
High quality bathroom, shower and kitchen tile regrouting across Liverpool, the Wirral, Chester, Cheshire, Warrington, St Helens and Greater Manchester, delivered by our in-house grouting specialist with over 22 years of trade experience. Degraded grout raked out, polymer waterproof grout repointed, and perimeter joints resealed with sanitary silicone.
Expansion Joints
Movement joint sealing for commercial and industrial buildings. The sealant is selected to suit the joint, with backing rod and primer where the system requires it.
External Sealant
External weatherproofing mastic for window and door frames, brickwork, cladding, and expansion joints across Liverpool, the Wirral, and the North West. We mechanically remove failed mastic, install closed-cell backing foam, and apply low-modulus UV-stable weatherseals to stop draughts and damp reveals.
Repairs & Resealing
Old, mouldy, split, or peeling sealant stripped out completely and replaced across Liverpool, St Helens, Warrington, Wigan, the Wirral and the North West. We mechanically remove 100% of failed mastic, sterilise joints with industrial biocides, and install trade-grade silicone backed by our 5-Year Domestic Guarantee.
Window & Door
Specialist window and door perimeter mastic sealing for UPVC, aluminium, and timber frames across Liverpool, the Wirral, and Merseyside. We extract cracked old sealant, install closed-cell backing rods, and apply low-modulus neutral silicone to eliminate draughts and stop damp window reveals.
Floor & Skirting Sealant
Colour-matched perimeter silicone sealing for herringbone LVT, laminate, wood and tiled floors, skirting boards and staircases across Liverpool, Merseyside, the Wirral and the North West. Neat expansion-gap finishing without bulky scotia beading.
Kitchen Worktop Sealant
Colour-matched, non-staining kitchen worktop, upstand, splashback, island and sink silicone sealing across Liverpool, Merseyside, the Wirral and the North West. Old split or mouldy kitchen silicone fully stripped out and replaced.
Concrete Floor Joints
Commercial and industrial concrete floor slab, saw-cut induction joint, warehouse expansion joint and traffic-grade perimeter sealing across Liverpool, Manchester, Warrington, the North West and nationwide across the UK.
Shower & Bath Resealing
Specialist shower, bath and wet-room silicone resealing across Liverpool, Merseyside, the Wirral and the North West. Old black mouldy or leaking silicone stripped out completely and replaced with trade-grade sanitary silicone.
Acoustic Sealant
CSCS and SSSTS certified commercial acoustic and intumescent mastic sealing contractors across Liverpool, Manchester, the North West and nationwide across the UK for apartments, hotels, schools, healthcare and office fit-outs.
Healthcare & Clinical Sealant
Hygienic, antimicrobial, cleanroom and food-safe sanitary mastic sealing across Liverpool, Manchester, the North West and nationwide across the UK for hospitals, dental and veterinary surgeries, laboratories, schools and commercial kitchens.
Colour-Matched & Stone Silicone
Specialist colour-matched and non-staining neutral-cure natural stone silicone sealing across Liverpool, Merseyside, the Wirral, Cheshire and the North West for marble bathrooms, quartz kitchens, herringbone floors and anthracite glazing.
Anti-Pick & Specialist Mastic
CSCS and SSSTS certified commercial applicators for anti-pick security sealants, structural glass balustrade silicone, chlorine-resistant swimming pool mastic and intumescent perimeter joints across the North West and nationwide across the UK.
Ready When You Are
Tell us what needs doing. Get a clear quote.
Get a fair, fixed quote without the hassle of a home visit. Send 2 or 3 clear photos on WhatsApp or call Liam directly on 0151 453 5755. We confirm your price upfront with zero hidden call-out fees.
How your quote works
- 1Send photos2 or 3 photos of the job plus your postcode on WhatsApp
- 2Get a fixed priceExact all-inclusive quote agreed before you book — no callout fees
- 3We do the work100% strip-out, tidy finish, backed by our 5-year guarantee
“Great service no mess and and really professional job would definitely recommend them”
Online Quote Request