Check out my building blog to learn more about construction for your home or office in Austin! David L. Traut, President, CAPS Certified (512)444-0097

Home Remodeling Austin, Texas(part 3 0f 3)The Envelope

Posted byDavid L. Traut, CAPS on Mon, Mar 08, 2010 @ 18:03 PM

     Now that you've worked so diligently to attain the most efficient envelope for your building it's time to consider the finer points and a few energy minded construction techniques. This is why home remodeling Austin, Texas is a unique problem and furthermore why professional residential remodelers exist.   From here on out you will be dealing  with the penetrations going through your envelope perimeter that are deducting from all your efforts.  These areas include not only the electrical boxes, wires,  pipes, and registers that are coming through your walls, floor, and ceilings,but in particular the doors and windows that connect us to the outside.

     Austin house remodeling criteria demand that any penetrations concerning your utilities must be dealt with using expanding foams, caulks, or gaskets that limit infiltration into your envelope.  You can use clear paintable caulks in conjunction with all your interior trim eliminating small leaks that add up to large problems.  You can also caulk your A/C buckets to the ceiling before replacing the grilles.  Use insulation dams above attic stair units and weatherstrip the pull down door to the ceiling.  Repeat this procedure at any additional attic skuttles within your building.

     Your return air closet can also be a conditioned air thief.  Caulk all inside corners of the closet and seal your air handler to the platform it rests upon.  Weatherstrip the closet door.  If you have a gas furnace you can either remove the closet ceiling or install combustion air pipes that connect the closet to the unconditioned attic above.

     Now to attack the most wasteful of all the efficient envelope penetrators that connect us to the great outdoors-your windows. They make up a great percentage of surface area in your now upgraded and insulated exterior walls.  You must access whether or not to replace the original leaky windows and what value they add while preserving the look of your exterior.  If you choose to keep them, either efficient storm windows or insulating shutters may be installed on the interior. If, on the other hand, you favor replacing them always remember a good rule of thumb.  A single pane of glass only offers an R-1 resistance to the outside.  You are basically dealing with aesthetics  so don't be taken in by all the bell and whistle talk.  The main specification to consider is the E-factor concerning how well light is transmitted  into the building helping with direct gain problems during the summer months.

     All solid exterior doors offer insulating qualities through their makeup and must be weatherstripped.  If your doors contain glass inserts treat them as windows installing insulating shutters on the interior or a storm door on the exterior. Any penetrations through the conditioned envelope reduces it's total efficiency. 

Energy Efficient Building Techniques

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Energy minded tankless water heaters in Austin, Texas

Check out Part 1: Ceilings which covers your attic wastes

Check out Part 2: Walls which covers your wall R-factors and underpinning

 Phote Credit: Compact fluorescent...By Mike Dykstra

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Home Remodeling Austin, Texas (Part 2 of 3) Walls

Posted byDavid L. Traut, CAPS on Mon, Mar 08, 2010 @ 18:03 PM

    Now that you've taken care of the energy being wasted "through the roof" how about those walls and what energy minded construction techniques can be utilized?  What type of construction makes up your walls and what are the best ways to go about eliminating some of the waste caused by air infiltration?  Let's define what home remodeling Austin, Texas means.

    Any remodeling contractor will tell you that Very old buildings have wall construction which is limited only by the materials that were available at the building sight for any specific time. These structures were normally composed of sod, masonry,  or logs that were chinked  with mud set into their joints relying on the principle of thermal massBy building thicker walls the same logic of the R-factor was used.  It took longer for outside temperatures to transfer into the building through these massive resistant walls into the living space.   

    Once lumber became available it was used at a premium.  The presence of clapboard or weather board construction came about using one by (one inch thick) boards in varying widths on  both sides of a 2x4 stud forming the outside walls. 

    The joints between the boards allowed air to infiltrate the building.  Batten boards were nailed over these joints on the exterior to eliminate some of the air flow and  later cheesecloth covered by wallpaper was applied on the inside boards.  The walls still had too much air infiltration relying on the dead air space and the composition of the wood itself to comprise the R-factor.  Finally 1/4" sheetrock was applied over the wallpaper as a first generation drywall application.

     If this clapboard system is plaguing your building you must access which side of the wall you need to attack.  Do you need new exterior siding that allows you to install and bury additional rigid insulation or desire a newer looking drywall finish on the interior? The only way to gain access to your stud space for applying batt insulation is to remove one side of the clap boards.  The kraft face must be turned toward your living space to create a vapor barrier against the outside and R-13 is the thickest product you can place in a four inch cavity.  Don't be misled by an offer using a blown in product that can be held up by wiring and never reach the bottom of the wall cavity which defeats the whole process.

     Once you have accomplished this task you have helped to maintain your envelope but you need to look down.  If your floor is on a pier and beam structure do you have an underpinning present?  It's purpose is to stop the wind from robbing you of additional infiltration from below your floor.  If present, the underpinning can eliminate having to install insulation between your floor joist.  It acts by literally raising the constant temperatures that existing naturally below ground.  This natural occurence will temper the crawl space beneath your floor joists and prevent energy robbing infiltration.  You now have a reasonably efficient envelope given your existing situation.

Check out Part 1:  Ceilings which covers your attic wastes

Check our Part 3:  The Envelope covering penetrations and their energy wastes

Photo Credit: Energy Savings By Prophet of the Haze

Energy Savings!

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Home Remodeling Austin, Texas (part 1 of 3)Ceilings

Posted byDavid L. Traut, CAPS on Mon, Mar 08, 2010 @ 17:03 PM

     So you have recently purchased or already own a building with character but feel like it's wasting your hard earned money causing high energy bills.  What are some of the best and most cost energy minded construction techniques in Austin, Texas  you can use to help lower those "through the roof" expenses? You need to understand primarily that your ceiling is the only common denominator between your costly conditioned living space and the root of your problem---the attic.

     The greatest retrofit solution concerning home remodeling Austin, Texas is the resistance factor (R-factor) you can add above your ceiling in the form of insulation to slow down temperature exchanges and the amount is determined only by the space that you have.  If you own a building without any insulation then insulating the ceiling above the walls and floor causes the most radical changes in the way the structure responds to temperature differentials. Lay in Kraft faced batts with the paper next to your ceiling to create a vapor barrier.  If your attic has old preexisting insulation add more on top of this in the form of unfaced batts running perpendicular to your ceiling joists or apply the blown in type. 

      Remember that insulation works best when there is air surrounding each of the fibers or filaments comprising it's makeup that forms the resistance.  Settled and stomped down areas defeat the purpose by transferring temperature easier between the fibers themselves that are touching one another. Think of your attic as a heat producing battery that pushes the summer heat down through your ceiling into the conditioned space.  The air expands as the temperature increases and once the attic ventillation is overcome by sheer volume it continues to hold that increasingly heated air only to transfer the heat directly through your ceiling causing your A/C to cycle more often.  Conversely in the winter the cold intrinsic attic air takes advantage of the principle of heat rising and becomes a collecting sponge for your expensive heated air.  The presence of adequate insulation fixes both situations because the greater the R-value the better the fix.

 

Check out Part 2: Walls covering R-factors within your walls

Check out Part 3: The Envelope covering penetrations and their energy waste

Photo Credit: lightbulb By trulyshyazn

Energy Minded

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