DEM Des Moines Masonry is a licensed masonry contractor serving Johnston, IA, with retaining wall construction, foundation repair, and brick masonry for the city's mix of older ranch homes and newer subdivisions. We have completed residential masonry projects throughout Johnston and respond to every new inquiry within 1 business day.

Johnston lots with sloped yards face real erosion pressure from the intense spring and summer storms that roll through central Iowa. The city sits on heavy clay soil that does not drain well - water builds up behind poorly built walls and fails them from within. Our retaining wall construction service installs proper drainage behind every wall and sets footings below Johnston's 42-inch frost line so the structure holds through years of Iowa freeze-thaw cycles.
Most Johnston homes sit on full poured-concrete or block basements, and central Iowa clay soil puts those foundations under seasonal stress every year. Wet spring conditions expand the soil against basement walls, and hard winters freeze the ground deep - a combination that opens cracks and causes bowing in homes built from the 1970s onward. Catching those signs early prevents a minor repair from becoming a major one.
Many Johnston homes built from the 1980s through the 2000s have brick veneer on the front facade paired with vinyl siding on the other three sides. The seam where those two materials meet - and the mortar joints in the brick itself - are common entry points for moisture after Iowa winters. Repointing failed joints and repairing damaged sections keeps water out of the wall structure underneath the veneer.
Johnston homes from the 1970s and 1980s with original mortar are at the age where freeze-thaw damage has made many joints recede or crumble. Tuckpointing - cutting out the deteriorated material and packing in color-matched fresh mortar - restores the joint seal and stops water from working its way behind brick faces before each new winter adds more pressure to existing gaps.
Johnston properties on the larger lots near the city's western and northern edges often have block wall features - yard borders, low retaining structures, or utility dividers - that shift or crack when clay soil moves beneath them through wet seasons. New concrete block wall construction with footings set below the frost line holds correctly through the same conditions that failed older work.
Curved streets and cul-de-sac layouts are standard across Johnston subdivisions, and most homes have private sidewalks and entry paths that connect the front door to the driveway and street. Original concrete or paver walkways on homes built in the 1980s and 1990s have been through enough Iowa winters to crack, heave, or settle unevenly - creating trip hazards and drainage problems right at the front of the house.
Johnston has been one of the fastest-growing cities in Iowa for two decades, which means its housing stock spans a wider range than many suburbs. Older ranch homes built in the 1970s and 1980s sit a few streets away from newer two-story subdivision homes from the 2000s and 2010s. Homes in the older range are now 20 to 50 years old - the exact window when roofing, insulation, and masonry elements installed at original construction need their first major attention. Johnston's frost line reaches about 42 inches deep in a hard Iowa winter, and concrete, block walls, and foundation perimeters that were not built with sufficient footing depth have been working against that frost every season since they were installed. The cumulative effect shows up as cracked driveways, shifting block walls, and bowing basement sections on older properties throughout the city.
Clay soil is the consistent underlying issue across all of Johnston's housing ages. The heavy clay soil under most of central Iowa absorbs water when it rains and expands, then shrinks during the dry stretches of summer. Johnston gets intense summer storms - significant rainfall in short bursts that saturates clay soil faster than it can drain. For homes with sloped lots, that means runoff and erosion. For homes with flat lots, it often means hydrostatic pressure building against basement walls. The brick veneer that is common on the front facades of Johnston homes from the 1980s onward adds another layer of concern - the mortar joints in that veneer are a primary entry point for moisture once the original mortar starts to fail, and in Iowa's climate, that failure comes faster than most homeowners expect.
We work in Johnston regularly and are familiar with permit requirements for residential masonry work through the city. Johnston has its own building department and development review process - separate from Polk County or Des Moines city offices - and projects involving retaining walls over four feet, structural foundation repairs, or significant block wall construction require a permit through the City of Johnston. When a permit is needed for your project, we handle the paperwork and coordinate the inspection - you do not have to navigate city hall on your own.
Johnston sits northwest of Des Moines along Merle Hay Road, which is one of the main corridors into the city and one most Johnston residents use regularly. The Johnston Town Center anchors the commercial activity along that corridor, and the Iowa National Guard Joint Forces Headquarters at Camp Dodge is one of the most visible landmarks in the city. Corteva Agriscience, one of the world's largest agricultural seed companies, has a major research campus in Johnston as well. Most residential neighborhoods fan out from the city's core in planned subdivision patterns with cul-de-sac streets and attached garages - a layout we navigate regularly on masonry jobs throughout Johnston.
Johnston borders several communities where we also work. Homeowners in Waukee to the southwest will find the same crew and approach on their masonry projects. We also serve the neighboring community of Urbandale to the south, where the housing stock has a similar suburban character and many of the same clay-soil masonry challenges.
Tell us what you are seeing at your Johnston property - cracking, leaning, erosion, or something you are not sure about. We reply within 1 business day and schedule a free on-site visit that fits your schedule without you needing to rearrange your day.
We visit your property and assess the masonry in person - checking slope, drainage, soil conditions, and the specific issue you called about. You get a written estimate with a clear scope and total cost, including whether a permit is required and what that adds to the timeline. No surprise charges after the work starts.
Once you approve the estimate, we schedule the job and handle any permit coordination with the city. A small-to-mid-size retaining wall or foundation repair typically takes two to five days. We confirm access needs before the start date - for most exterior jobs, you do not need to be home.
When the crew finishes, we walk the completed work with you - explaining what was built, where the drainage runs, and what to watch for in the first season. If a city inspection is required, we schedule it and confirm the permit is officially closed before considering the job done.
We serve all of Johnston - from older ranch homes near Merle Hay Road to newer subdivisions on the north side of the city. Call or send a message and we will get back to you within 1 business day.
(515) 724-6905Johnston is a city of about 24,000 people sitting just northwest of Des Moines, and it has been one of the fastest-growing cities in Iowa for the past two decades. Families consistently move to Johnston for the Johnston Community School District, one of the largest in Iowa by enrollment - which means there is always a steady flow of new homeowners settling in and starting to learn what their house needs. Most homes in Johnston are single-family detached houses with attached two-car garages and full basements. The housing stock spans from older ranch homes built in the 1970s and 1980s to newer two-story subdivision homes from the 2000s and beyond. Homes in the older range have reached the point where original roofing, mechanical systems, and masonry features need attention. Newer homes are hitting the 15-to-20-year mark, when the first significant maintenance needs start to show.
Merle Hay Road is the main north-south corridor through the city, connecting Johnston to Des Moines and carrying most of the commercial traffic. Johnston Town Center sits along that corridor and serves as the city's primary retail and community hub. The Iowa National Guard Joint Forces Headquarters at Camp Dodge is one of the most visible institutions in Johnston, employing thousands of people in the area. The western and northern edges of the city still have a more open character, with larger lots and some rural-feeling properties mixed in among the newer subdivisions. If you are in a neighboring community, we also work regularly in Waukee and in Des Moines.
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DEM Des Moines Masonry serves all of Johnston, IA - from older ranch homes near Merle Hay Road to the newest neighborhoods on the north side of the city. Call today or request a free estimate and we will respond within 1 business day.