Custom glass solariums, conservatories, and four-season sunrooms across Washington DC, Northern Virginia, and Maryland.
Year-round glass room additions with insulated Low-E glass, thermal break aluminum framing, and engineered foundations. From Victorian conservatories to modern lean-to sunrooms, we design, permit, and build complete glass enclosures tailored to DMV climate conditions.
0.28
U-Factor
20+
Years Exp
4.9
Star Rating
Fully
Insured
Solarium Styles
From traditional gable-front sunrooms to ornate Victorian conservatories, we design and build glass enclosures that extend your living space through all four DMV seasons.
A fully enclosed glass room with insulated roof panels and thermally broken frames designed for year-round use. Dual-pane Low-E glass walls and roof panels maintain comfortable temperatures through DMV winters and summers. Includes dedicated HVAC connection, radiant floor heating option, and condensation management systems.
An ornamental glass structure with curved eave details, decorative ridge cresting, and French door entry. Conservatories combine architectural elegance with modern thermal performance. The curved eave transitions create a distinctive silhouette while the insulated knee wall provides a solid base for furniture placement and improved energy efficiency.
Engineering
Modern insulated glass units use multiple technologies to keep your solarium comfortable year-round: Low-E coatings reflect radiant heat, argon gas fill reduces conduction, and thermal break frames eliminate cold bridging.
Microscopically thin metallic coating on the glass surface reflects radiant heat back toward its source -- keeping heat inside during winter and blocking solar heat during summer.
Argon gas between the panes is denser than air and conducts heat 34% less efficiently. This reduces convective heat transfer through the insulated glass unit.
A polyamide insulator between the inner and outer aluminum frame halves stops heat conduction through the metal, eliminating condensation and cold spots at the frame.
Schedule a free on-site consultation. We assess your home, discuss design options, and provide a detailed proposal with engineering specifications and permit documentation.
Roof Options
Your roof choice determines how much natural light enters the space and how the HVAC system is sized. Each option balances light transmission, thermal performance, and structural requirements differently.
Laminated safety glass with self-cleaning coating and Low-E insulation. Maximum natural light and open-sky views. Requires the most aggressive SHGC specification to control summer heat gain.
Multi-wall polycarbonate sheets that diffuse light evenly and block UV radiation. Lighter than glass and virtually unbreakable. Good thermal insulation from the multi-wall air chambers.
Insulated solid roof with strategically placed skylights for natural light. Best thermal performance of the three options because the insulated roof eliminates overhead heat gain and loss.
Glass Selection
We specify different glass types for each surface of your solarium based on orientation, exposure, and performance requirements.
Standard for all four-season solariums. Dual-pane glass with Low-E coating on surface #2 or #3 and argon gas fill. U-factor below 0.
U-Factor: 0.28
SHGC: 0.22-0.40
Dual-Pane Argon
Bronze, gray, or green tinted glass reduces glare and solar heat gain. Used on south-facing and west-facing walls where afternoon sun creates the most heat l...
Glare Reduction: 40-60%
Heat Rejection: 30-45%
Bronze/Gray/Green
Required for overhead glazing by building code. Two glass plies bonded with a PVB interlayer that holds fragments together if broken.
Code-Required Overhead
99% UV Blocking
STC 34-38 Acoustic
Titanium dioxide coating on the exterior surface breaks down organic dirt when exposed to UV light.
Photocatalytic Coating
Hydrophilic Surface
Reduced Maintenance
Our Process
From initial consultation through final inspection, we manage every phase of your solarium project. Our process ensures proper engineering, code compliance, and quality construction.
We visit your home to assess the attachment wall, foundation conditions, drainage patterns, sun exposure, and available footprint.
Structural engineering calculations determine foundation requirements, frame sizing, and glass specifications. We specify glass performance (U-factor, SHGC,
We prepare and submit permit applications to your local jurisdiction including architectural plans, structural calculations,
Foundation work includes excavation, concrete forming, and curing. Once the foundation is ready, the aluminum frame structure is erected and leveled.
Glass panels are installed into the frame with proper gaskets and sealant. Roof panels go in first, followed by wall panels. Interior finishing includes electrical, HVAC connection, flooring, trim, and paint. We schedule the final building inspection, walk you through the completed space, and provide maintenance documentation.
Structural
A solarium is only as good as its foundation. We engineer every base to handle the structural loads, thermal movement, and moisture management required for a glass enclosure in the DMV climate.
All footings extend below the 24-inch frost line required in the DMV area. We use reinforced concrete sized to carry the full dead load and live load of the glass structure plus snow load.
Poured or block stem walls elevate the solarium above grade to prevent water intrusion. The stem wall is waterproofed on the exterior face and connected to the foundation drainage system.
A continuous thermal break between the sill plate and the frame base prevents cold bridging from the foundation into the glass structure. This eliminates floor-level condensation in winter.
Metal flashing at the house-wall attachment point integrates with the existing siding and directs water away from the connection. Self-adhering membrane provides a secondary water barrier.
Weep holes at the base of every glass panel allow any moisture that penetrates the gaskets to drain to the exterior. The internal gutter channel collects and directs water to the weep outlets.
Every solarium receives a site-specific structural engineering package including foundation design, frame member sizing, glass thickness calculations, wind load analysis, and snow load verification.
Benefits
A four-season solarium adds usable square footage to your home that you can enjoy 365 days a year. Unlike a screened porch or three-season room, a properly insulated solarium is comfortable even in January and August.
Glass room additions increase your home appraisal value. Solariums are among the highest-return home improvements because they add conditioned living space with premium architectural character.
Floor-to-ceiling glass walls and optional glass roof panels flood the space with natural daylight. Studies show that natural light improves mood, productivity, and sleep quality.
Modern insulated glass achieves U-factors below 0.30. With proper HVAC sizing and solar control glass, a four-season solarium operates efficiently without excessive energy costs.
A solarium creates a seamless transition between your home interior and your garden or yard. Enjoy outdoor views and natural surroundings without weather, insects, or allergens.
Every solarium we build is fully permitted, structurally engineered, and code-compliant. Fully Insured. We handle all permits, inspections, and HOA approvals across the DMV.
FAQ
A solarium has a glass roof in addition to glass walls, creating a fully transparent enclosure. A sunroom typically has a solid, insulated roof with glass walls only. Solariums provide more natural light and an open-sky feeling, while sunrooms are easier to climate-control because the solid roof reduces heat gain and heat loss. Both can be built as four-season rooms with insulated glass.
Yes. A properly engineered four-season solarium with insulated Low-E glass, thermal break aluminum framing, and dedicated HVAC can be used comfortably through DMV summers and winters. Modern insulated glass units with argon fill and Low-E coatings achieve U-factors below 0.30, keeping the space warm in winter and blocking excessive solar heat gain in summer.
Solarium roofs use laminated safety glass or tempered-over-laminated glass to meet overhead glazing code requirements. The glass is typically insulated (dual-pane) with Low-E coating on an interior surface and argon gas fill. Some solarium roofs use polycarbonate panels instead of glass for lighter weight and better impact resistance, though polycarbonate scratches more easily and yellows over time.
Yes. A solarium is a structural addition to your home and requires building permits in all Virginia, Maryland, and DC jurisdictions. The permit process involves architectural drawings, structural engineering calculations, energy code compliance documentation, and foundation plans. We handle the entire permit process including plan preparation, application submission, and inspection coordination.
Solarium costs vary widely based on size, glass specifications, foundation requirements, and HVAC needs. Contact us for a free estimate tailored to your specific project. We provide detailed proposals with material specifications, structural requirements, permit costs, and a complete scope of work so you can make an informed decision.
Most solariums require a concrete foundation -- either a monolithic slab, frost-protected shallow foundation, or pier-and-beam system depending on your soil conditions and local frost depth requirements. In the DMV area, frost depth is 24 inches, so foundation footings must extend below that depth. We engineer the foundation to carry the glass structure loads and comply with local building codes.
Not with proper glass specification. We use Low-E glass with a Solar Heat Gain Coefficient (SHGC) appropriate for each glass surface orientation. South-facing and west-facing glass panels get lower SHGC ratings to limit summer heat gain. Roof glass receives the most aggressive solar control coating. Combined with proper ventilation, operable panels, and HVAC sizing, a modern solarium stays comfortable year-round.
Yes. We replace failed, foggy, or outdated glass panels in existing solariums with modern insulated glass units. Upgrading from single-pane or failed dual-pane glass to current Low-E insulated units dramatically improves energy efficiency and comfort. We measure each panel, fabricate exact-fit replacements, and install them without disturbing the existing frame structure.
A thermal break is a non-conductive material (typically polyamide) inserted between the interior and exterior halves of an aluminum frame. Without a thermal break, aluminum conducts heat and cold directly through the frame, causing condensation on interior surfaces in winter and heat transfer year-round. Thermal break frames reduce frame conductivity by over 50 percent and are essential for any four-season solarium.
A typical residential solarium takes 6 to 12 weeks from permit approval to completion. Foundation work takes 1-2 weeks, frame erection takes 1-2 weeks, glass installation takes 1-2 weeks, and interior finishing takes 1-2 weeks. Custom conservatories with ornamental details can take longer. Weather delays are possible during foundation and framing phases. We provide a detailed construction schedule during the proposal phase.
Service Area
We design and build glass solariums throughout Washington DC, Northern Virginia, and Maryland. Every project is engineered for local climate conditions, soil types, and building codes.
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Learn MoreContact us for a free on-site consultation. We will assess your home, discuss design options, review glass specifications, and provide a detailed proposal for your custom glass solarium or conservatory.
Fully Insured -- Serving DC, Virginia & Maryland