Learn from the Experts: Petro Design Blog


Kathleen Litchfield President of Petro Design/Build, Inc. Kathleen Litchfield
President of Petro Design/Build Group, is one of the Washington area's leading landscape and garden design experts. Her insightful advice on landscape design, construction, and practice has been published and quoted innumerous regional and national magazines. She has developed and taught accredited courses in horticulture and has lectured for garden clubs, the National Association of Remodeling Industry, the Landscape Contractors Association, the Smithsonian Educational Series, the George Washington University landscape design program, and the Washington Design Center.

Kent Richard Abraham, Principle Architect with Abraham/Petro Kent Richard Abraham,
Principal Architect with Abraham/Petro a division of Petro Design/Build He is a member of the US Green Building Council 2006. His education includes Bachelor of Architecture, 1970, University of Nebraska, With Honors (Cum Laude),Awarded the Faculty Award, Outstanding Senior Student; Master of Architecture, 1971, University of Pennsylvania, Studio of Louis Kahn. He has served as Chair, Thesis committee school of Architecture and Planning, The Catholic University of America Washington, DC since 1978.


Posts Tagged ‘mold remediation’

Melting Snow and Molds

OK, it’s going to melt….we hope.  This is when the saturation starts along the exterior walls of the foundation. If the gutters have pulled away from the house it’s only going to get worse.  I don’t know about you, but my mold allergies keep me vigilant year-round for water seapage.  It’s easier to prevent than fix.  I’ve been in many homes where the residents are living with and breathing black mold everyday!!  They just got used to it and yet they only buy organic foods!!!  It’s like my painter telling me his health concerns about lead-based paints and how he takes a meter with him to check the levels before sanding; (which is a important and necessary), but meanwhile, he is puffing on a cigarette!!!

Fortunately, my body tells me when mold is around.  I can feel it immediately.

My mother-in-law died 5 years ago from pulmonary fibrosis.  When she was sick the doctors could not figure out what was wrong with her.  She remembered that in the house she used to play in across the street as a child, every member of that family died from pulmonary fibrosis.  She mentioned this to her doctor who tested her and confirmed that she did, indeed, have the disease.  She and her brother remembered that the house smelled moldy.

Mold spores, when breathed in, remain in your lungs.  Good health and a good dose of anioxidants will prevent illness.  As we age,  our defenses may decrease for a variety of reasons (stress, pesticides in foods, hormone depletion…to name a very few)  This is when the spores can attack.

So, check your gutters, crawl spaces and foundations.  If you suspect mold, don’t disturb it yourself. Call a professional immediately.

Lessons from Hurricane Lee

A ‘1000-year’ storm event is certainly the true test of the capability of a home drainage system.    Yeah, yeah “it was a freak event” yet we have had 4 ‘freak’ events in the last 6 years and it only takes 1 to add thousands of dollars in repairs or, at least, raise your insurance premiums.

Even a trickle of water in a finished basement space can ruin flooring, drywall and furnishings and feed deadly molds.

Not surprisingly, most of the damage I’ve seen, in regards to drainage, was caused by the neglect of common sense principals.

Drainage is one of the most important elements of a sound foundation and so, truly, the most cost effective preventative you can implement.

Preferably, the builder was diligent when your home was constructed.  If your home was built in the 80’s you can cross that diligence off the list.  Faulty foundation drainage may not be evident until after the home warranty has expired or until a storm ‘event’…more on this in a future blog.

It is curious to me how homeowner’s will trust their maintenance crew for resolving drainage issues.  Asking a mowing and mulching crew landscape design questions can be detrimental but relying on them for drainage correction has cost thousands in repairs.  The most cost effective job a maintenance crew should implement is gutter cleaning.  That said; I was on a project earlier this year where the client had had her maintenance company clean her gutters regularly.  Unfortunately, they cleaned only the gutters and so the bases of the downspouts were filled 4’ deep with decomposing compacted debris.  All this water had been overflowing the corrugated underground piping connections and directly into the foundation walls of the house.  Since the homeowner traveled often, she was unaware of the increasing mold growth until the basement flooded completely forcing her to remove furnishings and storage boxes from the basement thereby exposing the years of infiltration and deadly effects.  The cost was in the thousands in remediation, repairs and hotel expenses, as the odor and mold spores prevented her remaining in her home.

Piping any downspouts underground for more than 10’ should exclude the use of any interior corrugated pipe.  Corrugated piping is the black ridged piping you can easily pick up at any hardware store for about 45 cents a foot.  The ridges trap debris leading to water back-up which can freeze and settle the pipe causing even more back-ups.  There is a smooth interior walled black corrugated pipe (N12) or a number of PVC and SDR smooth walled pipes available depending on whether they will be directed under sidewalks, driveways or just soils.

Before looking down, though, it’s best to start at the top when addressing drainage issues.   Things to look ‘up’ for are:

  • Undersized gutters and downspouts for the size and slope of the roof space
  • Not enough downspouts for the distance of the gutter
  • Gutter slope not enough to move the water
  • Rivet pops from winter ice-jambs allowing water behind the gutter
  • Damaged/bent gutters from winter ice jambs or falling tree limb

Confirmation of the above would be visible signs of spillage on the ground level and possible infiltration of water into the house.  Chances are if your gutters have been overflowing for some time, your foundation has settled causing even direct rain water to collect and filter into your foundation.

The next time it rains, go outside with an umbrella and look up.

Clogged corrugated interior piping

 

downspout compacted with rotted leaves and soil

To be continued…