Concrete work in Santa Fe
A concrete job in Santa Fe often starts with a question most towns never ask: is the property inside one of the city's historic districts? Driveways, walls, patios and steps are part of how a street looks, and in Santa Fe that look is regulated. After that come the usual concrete questions about base, reinforcement, joints and curing, plus one that applies across New Mexico: how a new or repaired slab affects radon getting into the house.
Check the historic district first
The City of Santa Fe has five historic districts. If your property is in one and you want to alter it or build on it, you file a Historic Districts Application Request with the city's Historic Preservation Division first, and the city won't issue a construction permit until that approval comes through. For concrete, that can matter for a new driveway apron, a courtyard, a garden wall footing or a replacement stoop facing the street.
Before you collect quotes, find out whether the address is in a district. If it is, ask each contractor whether they have worked through the Historic Preservation Division before, who prepares the drawings or photos the application needs, and whether the price assumes approval of the design you want. A quote for gray broom-finished concrete may change if the approved design calls for a colored or textured surface, a different edge or a different layout.
Licenses in New Mexico
New Mexico's Construction Industries Division, part of the Regulation and Licensing Department, licenses the state's construction contractors. It tells consumers to check that a contractor holds a valid license through its online license search. Do that before you sign, and make sure the license classification fits the work: flatwork, footings and retaining walls aren't always covered by the same classification. Write the license number on the contract.
Radon and the slab
The New Mexico Environment Department says radon levels high enough to need mitigation have been found in homes in every county in the state, and that elevated levels are most common in the northern mountains and high-altitude areas. Radon is a soil gas, and it gets into a house through cracks, joints and openings in a slab or foundation.
That gives concrete work a part in radon control:
- Test before and after. If you're replacing or adding a slab that touches the house, such as a basement floor, a garage floor or an addition, test the house before the work and again afterward.
- Ask about penetrations. Pipes and conduits that pass through a new slab should be sealed where they go through.
- Ask about mitigation rough-ins. If you're pouring a new floor inside the house, ask whether a gravel layer, a vapor barrier and a capped pipe for a future radon system make sense. They cost far less before the pour than after.
- Seal cracks properly. A crack filler made for concrete keeps water out and can help with soil gas. It doesn't replace a test.
Base, reinforcement and joints
Most concrete problems start below the surface. Ask what the contractor will dig out, what fill goes in, how it will be compacted and how thick the slab will be. Ask whether the slab gets wire mesh, rebar or fibers, and how the steel will be held up in the middle of the slab rather than lying on the dirt. Ask where the control joints will go and how deep they'll be cut. Joints don't stop concrete from cracking; they decide where it cracks.
Weather on pour day
Ask how the contractor handles a cold morning, a hot afternoon or a windy day. Each one changes how fast the concrete sets and how fast the surface dries. Ask whether they use blankets, curing compound or wet curing, and how long the slab has to cure before foot traffic, then cars.
Comparing quotes
Get every quote on the same terms:
- square footage and thickness;
- base preparation and compaction;
- reinforcement and joint layout;
- finish, color and edge detail;
- removal and haul-off of old concrete;
- the permit, and the historic district application if the property needs one;
- cleanup and the warranty, in writing.
A quote that leaves out the permit or the historic review isn't cheaper. It just hasn't counted those steps yet.