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INSULATION INSPECTION & IMPROVEMENT
ACOUSTICAL SEALANT CHOICES
AIR LEAK MINIMIZATION
ASBESTOS IDENTIFICATION IN BUILDINGS
BASEMENT CEILING VAPOR BARRIER
BASEMENT HEAT LOSS
BUCKLED FOUNDATIONS due to INSULATION?
CATHEDRAL CEILING INSULATION
CATHEDRAL CEILING VENTILATION
CEILINGS, DROP or SUSPENDED PANEL
DEW POINT TABLE - CONDENSATION POINT
DUCT INSULATION, ASBESTOS PAPER
FIBERGLASS PARTICLE CONTAMINATION
Fiberboard Insulation Sheathing Mold
FIBERGLASS INSULATION MOLD
FIREPROOFING ASBESTOS SPRAY-ON
FRAMING DETAILS for BETTER INSULATION
FRAMING DETAILS for DOUBLE WALL HOUSES
FRAMING METAL STUD PERFORMANCE
FREEZE-PROOF A BUILDING
HEAT LOSS in BUILDINGS
HEAT LOSS PREVENTION PRIORITIES
HEAT LOSS R U & K VALUE CALCULATION
HOUSEWRAP AIR & VAPOR BARRIERS
HOUSE DOCTOR, how-to be
HUMIDITY LEVEL TARGET
ICE DAM PREVENTION
INSULATION AIR & HEAT LEAKS
INDOOR AIR QUALITY & HOUSE TIGHTNESS
INSULATION FACT SHEET- DOE
INSULATION INSPECTION & IMPROVEMENT
INSULATION R-Values & Properties
LEED GREEN BUILDING CERTIFICATION
LOG HOME ENERGY EFFICIENCY
MOLD in FOAM INSULATION, RESISTANCE
MOISTURE CONTROL in BUILDINGS
NOISE / SOUND DIAGNOSIS & CURE
RIGID FOAM USE INDOORS
SHEATHING, FOIL FACED - VENTS
SLAB INSULATION, PASSIVE SOLAR
STAINS on & in BUILDINGS, CAUSES & CURES
STRAW BALE CONSTRUCTION
STUCCO WALL METHODS & INSTALLATION
STUCCO OVER FOAM INSULATION
SWEATING (CONDENSATION) on PIPES, TANKS
Thermal Expansion Cracking of Brick
THERMAL IMAGING, THERMOGRAPHY
THERMAL MASS in BUILDINGS
THERMAL TRACKING Indicates Heat Loss
TRUSS UPLIFT, ROOF
VAPOR BARRIERS & CONDENSATION in BUILDINGS
VENTILATION in BUILDINGS
WALL CONSTRUCTION BARRIER vs CAVITY
WIND WASHING INSULATION At EAVES
WINTERIZE A BUILDING
Greenhouse insulation advice: this article discusses insulation options for greenhouses and nighttime insulation options for solariums and cold or drafty windows.
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The table of insulation properties at page top and accompanying text are reprinted/adapted/excerpted with permission from Solar Age Magazine - editor Steven Bliss. Readers should also see INSULATION R-Values & Properties for a more extensive table describing the properties of different insulating materials.
Question about how to best insulate a greenhouse against night time heat losses:
We have a greenhouse with a 30- by 20-foot vertical south-facing wall and have searched in vain for a thermally efficient and aesthetically acceptable nighttime insulation.
Also, we plan to add a brick floor on top of our slab which is insulated only on the perimeter and always feels cold. Should we put an inch of blue styrofoam under the brick to isolate it completely from the slab? We have no significant overheating problem. - P.P.
A number of options for nighttime insulation were described in "Warm Wraps for Cold Windows", Solar Age, 6/83. Slab floors, even if they are insulated, tend to be chilled by downdrafts from cold window surfaces. So you should look for a window insulation with good edge seals to reduce the cold air flow at night.
If you find that window insulation does not solve the cold floor problem, then adding insulation to the slab would be in order. Your approach should work well as long as the brick will provide adequate thermal storage for your design.
To increase the new floor thickness, and thus its thermal mass, you can set the brick on edge. Since you are setting the brick over compressible material, a flexible (mortarless) paving system would be easiest. In this type of system, the floor bricks are tightly packed to one another without wet mortar. A mix of sand and dry mortar may be swept between the joints and dampened for a more solid and less permeable floor.
You may set the bricks on the foam insulation or add a layer of plywood underlayment first. In either case, a double layer of 15# felt paper is recommended directly under the brick to cushion and protect the underlayment. Since heat loss is greatest from slab edges, you might want to thermally isolate the new floor from the foundation walls by adding a foam strip at the floor's edge. You can conceal the foam strip with a baseboard (sketch above-left).
Also see GREENHOUSE DESIGN for SOLAR HEATING for a discussion of greenhouse trombe wall and ventilation for solar heating.
Here we include solar energy, solar heating, solar hot water, and related building energy efficiency improvement articles reprinted/adapted/excerpted with permission from Solar Age Magazine - editor Steven Bliss.
Original Solar Age Magazine article on greenhouse insulation and night time insulation
Q&A: Insulating a Greenhouse: Insulation for Greenhouses or Solariums - PDF version; use your browser's back button to return to this page
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