Masonry Contractor in Hilo, HI - Block, Brick and Stone Built for the Rain

Mainstay Hilo Concrete and Masonry is a masonry contractor based in Hilo. We repair and build block, brick and stone walls, foundations, chimneys, paving and walkways for homes across the city.

Red brick chimney with a metal cap rising beside a dormer on a gray shingle roof.
Service area
Hilo, HI

Homes and yards across Hilo

Hilo houses take a lot of rain, and it shows in the masonry. We work on older houses near downtown that sit on block piers and short block walls, on newer homes up the slope, and on the small shops and offices mixed in between, and most of the calls start with water. Rain can change a lot over a short distance here because the terrain and the trade winds shape where it falls, so a wall up the hill and one near the bay can wear out at very different rates.

We're based in Hilo and also work in Hawaiian Paradise Park and the cities around it. Moss, soaked yards and roof runoff are what we see most, so on every job here we look at where the water goes before we touch the mortar.

Our services in Hilo, HI

  • Older Hilo houses often sit on block piers or short block walls that crack where roof runoff soaks the ground. Our foundation repair finds where that water goes first, then resets or rebuilds the block.

  • Sloped lots need walls that hold soil through heavy rain, and a wall that can't drain will push out. We backfill with gravel and leave openings at the base so water can get out.

  • Damp, shaded walls in Hilo lose their mortar joints faster, and moss and mildew hold the water in. We grind out the soft mortar, find where the water comes from and repack the joints.

  • A lot of property-line walls around Hilo are block, because it stands up to the wet where wood fencing rots. We lay it to a string line, fill the hollow cores where needed and cap it.

  • Walkways and steps here stay wet and grow slick algae, and a flat path that holds puddles gets worse fast. We slope new walkways so water runs off and give the surface a texture that grips.

  • Lava rock walls are part of a lot of Hilo yards, and the old ones often lean or drop stones after years of rain. We reset loose rock, rebuild failed sections and match what's there.

Explore our service areas

How the job goes when you call us in Hilo

  1. Call or send the form

    Call (808) 229-1042 or send the form and tell us what you're seeing. We set a time for me to come out to your property.

  2. I look over the job

    I measure and work out why it failed or what the site needs before I put a price on anything. You get a written estimate that lays out the scope, and if the job needs an engineer, I tell you then.

  3. Our crew builds it as written

    Our own crew does the work, and I run it on site. We build it the way the estimate is written, so what you agreed to is what goes in.

  4. We walk the finished job

    I walk the finished work with you before we call it done. If something doesn't look right to you, that's when we talk it through.

Hilo masonry questions answered

Who issues building permits for masonry work in Hilo?

The building official issues them for work the state building code covers, wherever County of Hawaii ordinance requires a permit. The state code leaves that choice to each county, so whether your wall or repair needs one comes down to the county's rules for that kind of job. When I look your job over, I tell you up front if it needs a permit, and if it does, we take care of the paperwork with the county and keep you posted on where it stands before we start.

How do I check that a masonry contractor in Hilo is licensed?

Make sure the contractor holds a current license from the state Contractors License Board, because every Hawaii contractor license comes up for renewal by September 30 of every even-numbered year, and one that isn't renewed counts as unlicensed and can't do the work. The state also requires a General Excise Tax License from anyone earning income from construction contracting, with a one-time $20 fee at registration. We're licensed and insured, and you're welcome to ask me about it when I come out.

Which seismic category applies to a home in Hilo?

For a home on Site Class D ground, the state residential code puts North and South Kohala, Hamakua and North Hilo districts in category D2 and every other district on the island in category E, which takes in Hilo itself. A higher category usually means more steel and grout in block walls and foundations, so it's one of the things I check before I write the scope.

Who can do the electrical and plumbing for an outdoor kitchen in Hilo?

A licensed electrician or plumber has to do that part, because the state contractor board says electrical and plumbing work in Hawaii needs an individual license, and a contractor without one must employ someone who has it. That license may also be needed to get the building permit, so we plan the block, counters and stone around where those lines run before any of it gets built.

What causes mortar joints to crumble on older Hilo houses?

Water causes most of it. Rain soaks the joints, moss and shade keep them from drying, and roof runoff or a low spot in the yard keeps feeding the same corner until the mortar goes soft. New mortar won't last if that water still gets in, so I find the source first and put fixing it in the scope.

How much does masonry repair cost in Hilo?

The price comes down to how big the job is, how much old work has to come out and what's causing the damage, and you get it in writing after I've measured on site. Drainage work, steel and grout for a reinforced wall, a steep or tight lot, and any permit or engineer add to it, while a simple repair on sound ground costs less. The schedule turns on the weather, since mortar and concrete shouldn't go down in a heavy rain, and on any permit the job needs.

Get a free on-site masonry estimate in Hilo

Send the form and we'll reply within one business day to set a time. I come out to your Hilo property, measure, look at what's causing the trouble and put the scope in writing. The estimate is free, and there's no pressure to book.

Location
Hilo, HI 96720
Hours
Mon–Fri: 8 AM–11 PM, Sat–Sun: 6 AM–10 PM

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Tell us about your Hilo masonry job

A soft joint or a small crack caught now is usually a smaller repair than the wall it turns into after another year of rain.