At RKM Homes we treat solar as a planned element of the house rather than an afterthought, starting integration at the design phase when we’re siting the home on your lot and laying out roof planes. Orientation and shading analysis drive which roof faces get panels — in Denver a true south or southwest exposure with a moderate pitch maximizes year‑round production and helps with snow shedding — and we size roof areas and choose materials (standing‑seam metal, asphalt shingle, tile, or BIPV products) with mounting method and long‑term performance in mind. Early decisions about panel type and placement minimize obstructions from chimneys, vents and skylights, reduce costly structural retrofits, and preserve curb appeal.
During construction we coordinate structural and electrical work so the solar system ties cleanly into the roof and the house. Framing and roof sheathing are engineered up front to carry the additional live and dead loads, and attachment points are aligned with rafters or engineered members; for asphalt roofs we use flashed lag‑bolt mounts with secondary waterproofing, while standing‑seam roofs are often fitted with clamp systems that avoid roof penetrations. Conduit runs and inverter/battery locations are roughed in during the electrical phase so wiring stays inside conditioned space where possible, grounding and rapid‑shutdown requirements are met, and roof penetrations are detailed with manufacturer‑approved flashing and sealants to protect the envelope.
Permits, inspections and utility interconnection are scheduled as part of our construction timeline to avoid delays and to ensure compliance with local code and utility requirements. We coordinate roofing completion and solar installation to protect roof warranties, select inverter and panel configurations (string, microinverter, or optimizers) that suit the roof geometry and shading profile, and size battery storage and disconnects according to the homeowner’s goals. By planning solar with the roof from day one, RKM Homes reduces retrofit costs, improves system performance in Denver’s climate, and delivers a cohesive, durable outcome that meets both aesthetic and energy goals.
How do solar siting, roof orientation, pitch, and shading affect solar installation on a custom home?
As a Denver custom home builder, we treat solar siting as a design decision, not an afterthought. The ideal roof planes face true south and have a pitch close to your latitude for maximum year‑round energy, but east‑ and west‑facing planes can also make sense depending on your load profile (morning vs evening use). During schematic design we lay out roof massing so the largest, unobstructed planes are oriented toward the sun: place living spaces and the simple roof geometry where you want panels, and keep mechanicals, chimneys, and large dormers off the primary solar faces.
Shading is often the biggest hidden cost — a small shadow from a nearby tree, neighboring house, or even a rooftop vent can reduce production disproportionately. We coordinate a site survey and sun‑path/shade study early: that includes tree heights and distances, seasonal sun angles, and three‑dimensional modeling so you see how summer and winter shadows fall. If shading is present, practical remedies include shifting the array to a less shaded plane, minor site grading or tree trimming, or specifying module‑level power electronics with the solar designer to mitigate localized losses.
Practical steps you can ask for at the preconstruction meeting: request a solar‑ready roof plan that reserves a contiguous, unobstructed roof area sized for the system you expect (as a rough guide, many homes need several hundred square feet), show exterior conduit chase locations to the main panel, and locate the inverter/battery area near the service panel to minimize wiring runs. Make solar siting part of the architectural review so roof overhangs, porch canopies, and window placement don’t create unintended shade; doing this up front saves cost and roof rework down the road and lets us coordinate structure and aesthetics without compromising energy goals.
Mounting/integration method (rack‑mounted vs flush vs building‑integrated PV) and roofing material compatibility
Which mounting style — traditional rail‑mounted racks that lift panels off the roof, low‑profile flush mounts that sit closer to the roofline, or true building‑integrated PV that replaces roof material — will give you the look you want while matching the thermal performance and maintenance realities of your chosen roofing material (asphalt shingle, concrete/clay tile, slate, standing‑seam metal, or membrane)?
As custom builders, when should we steer clients toward specific roof materials to simplify solar attachment — for example recommending standing‑seam metal when you want clamp‑on installs with no roof tile work, or planning tile hook systems and panel layouts up front if you choose clay or concrete tile — so the roof and solar are coordinated during framing and roofing rather than retrofitted later?
When is it worth investing the extra design time and cost for building‑integrated PV versus sticking with conventional panels on rails, and what roof slopes, visible elevations, and architectural details make BIPV a practical choice for better aesthetics or minimal profile compared with the higher energy yield and easier servicing of rack‑mounted systems?
Structural engineering, roof load capacity, penetrations, flashing, and waterproofing
How will adding solar panels change my roof’s structural requirements and what will an engineer check? On our custom builds we engage a structural engineer early so the roof framing is sized for the added dead load of panels, the rail system, and local snow/wind loads — especially important in the Denver area. The engineer looks at rafter/truss spans, spacing, connection details, and diaphragm effects; if necessary we add blocking, sister rafters, or beef up truss top chords before roofing is finished so attachments land on solid members rather than just the sheathing.
Where exactly are the mounts attached and how do you avoid weakening trusses or creating point load problems? We plan mounting locations during framing so rails and standoffs align with rafters or engineered blocking; this limits the number of penetrations and prevents loading only on thin sheathing. For trussed roofs we follow the engineer’s guidance — typically attaching into the top chord with through-bolts or specified lag bolts and backing plates rather than penetrating mobile webbing — and we size fasteners per the manufacturer and code to resist uplift and shear. That coordination reduces field changes, keeps attachment spacing appropriate, and avoids overstressing roof members.
How are all the penetrations flashed and waterproofed to prevent leaks long term? We coordinate roofing and PV crews so flashing is installed under the roofing underlayment where required, and we use manufacturer-approved flashing kits or custom stainless-steel flashings sealed with durable elastomeric sealants and ice-and-water shield in vulnerable eaves and valleys. Every penetration is installed with a proper boot or pan flashing, fasteners are sealed and torque‑checked, and we schedule a water-test/inspection before final concealment so you don’t get surprises after occupancy.
Electrical system design, inverter/battery placement, wiring, and utility interconnection/permits?
What electrical decisions should I make up front so the solar system integrates cleanly with my new home? As a custom home builder we treat the solar electrical design like any other major trade: get the single‑line diagram and inverter/battery specifications early and coordinate them with the main electrical service. That lets us size the service, panel location, and conduit chases during framing so you don’t end up with expensive retrofit runs. Ask your solar designer for the expected AC and DC conductor lengths and conduit sizes; a general rule of thumb is to site the inverter within roughly 10–25 feet of the main panel if possible to minimize AC conductor size, voltage drop, and cost. Reserve dedicated wall space, a 3‑foot clear workspace in front of the equipment, and a panel or subpanel location that can accept the inverter’s AC output and a utility disconnect.
How will wiring, rapid‑shutdown, and equipment placement affect construction and inspections? Decide whether the system will use a string inverter, microinverters, or optimizers because that changes the wiring path and roof‑to‑equipment junction boxes. String systems require DC runs to a combiner or inverter and larger conduit on the roof‑to‑inverter run; microinverters or power optimizers put much of the wiring on the roof and reduce DC conduit needs. Modern code requires rapid‑shutdown and clear labeling for PV circuits, arc‑fault/ground‑fault protections on the DC side in many jurisdictions, and accessible AC disconnects for emergency responders. During rough framing we run a dedicated conduit chase from the roof area to wherever the inverter/battery will live (garage, mechanical room, or basement) so all wiring is concealed and inspections pass without patchwork.
What permits and utility steps should I expect, and who handles them? The typical process requires an electrical and building permit from the jurisdiction plus a utility interconnection application — your installer usually prepares the single‑line, equipment datasheets, and the permit submittal, but you should confirm that is included in the contract. Utility review can take a couple of weeks to a few months depending on upgrades (meter socket or service transformer changes are common), and the local inspector will want to see installed equipment, labeling, and the AC disconnect before final sign‑off. Make sure your contract spells out who is responsible for pulling permits, scheduling inspections, and obtaining the utility permission to operate; getting those responsibilities clear up front avoids delays and unexpected costs at the finish stage.
Who is responsible for solar and roof warranties, maintenance, and future roof replacement on a custom home?
As your builder, we treat warranty responsibility as something that must be written and coordinated before panels ever arrive. Ask the solar contractor for manufacturer warranty papers (modules, inverters, racking) and the roofer for their roof warranty in writing, and require both parties to confirm in the contract that their installation methods preserve those warranties. We will register equipment warranties with manufacturers where required and keep copies in the buyer’s as‑built packet, but you should also confirm transferability of warranties to future owners and demand proof of insurance (general liability and WCB/worker’s comp) from each trade before work begins.
Maintenance and ongoing costs are predictable if you plan for them at closing. Expect a simple annual visual and electrical check (we recommend a professional inspection once a year or after major storms), plus occasional inverter or optimizer service decades into the system’s life; cleaning in Denver is usually infrequent but can be required if dust, pollen, or construction residue accumulates. Request a written O&M plan and pricing from your solar contractor, ask for monitoring access so you can see production declines, and budget separately for mid‑life component replacement (inverters/batteries) rather than treating the system as no‑cost after installation. We will leave you with a maintenance checklist and training on monitoring tools when we hand over the home.
Planning for roof replacement avoids expensive surprises later and should be spelled out now. Require a contract clause that defines who pays for removal and reinstallation of panels when the roof needs work (many builders and solar companies offer a fixed price or reinstallation warranty), and demand as‑built drawings that mark every penetration, conduit run, and attachment point so future roofers aren’t cutting blind. We design panel layouts to minimize the area that would need removal and coordinate staging areas for reinstallation; still, set aside an allowance in your lifecycle budget and confirm whether incentives or rebate paperwork will need our cooperation for future work so that replacing the roof or solar components is an administrative, not a logistical, headache.