Unique Roof Coating / Waterproofing & Repair
SANI-TRED Products are Truly Unique and are Not an Acrylic Latex!
Roof/Deck materials tough enough for heavy foot or vehicle traffic!
Pitched, Galvanized, Painted Steel Roof Coatings, Nail Head Sealing, Corrosion Protection, Repair!
Flat Commercial Roofing Systems Provide Monolithic (one piece) Sealing, Regardless of Multitude of Mechanical Through Deck Vents or Fittings
High Volume Spray Installation of Large Roofs
Mobile Home and RV Roofing Systems!
SANI-TRED ROOF SYSTEMS: On flat or low-pitch roofs SANI-TRED provides a seamless membrane of near-unlimited longevity potential with no maintenance.
The Irony of Flat Roof Construction
Isn't it ironic considering the importance of the need for a flat roof to protect the entire building, it's contents and occupants from water damage? Most flat roofs have been the depository of the cheapest and lowest quality types of building materials known to man! It’s normal to see tar, tar paper, tar soaked fabric, loose foam sheets and latex, (water soluble), coatings on flat roofs with poor or no effective drainage. This puts a heavy burden of performance on those low quality materials, with all of their seams and weak points. Now, top all of this mess with a layer of ballast stones to make it impossible to find the leaks! Is it any wonder that flat roofs are notoriously plagued with leaking problems even if these types of low quality roofing materials, with excellent drainage, are "installed correctly", and often they aren’t?
Normally, flat roofs consist of concrete, steel, or wood substrates, heavily contaminated with tar combined with layers of loosely fitted tar paper. The tar paper usually has turned up edges and corners; it is warped and puckered, sun and heat damaged, and has protruding high points, irregularities, random seams, raised patches, tar deposits, stone ballast, etc.
Flat roof owners must realize that it is not practical or cost effective to apply a high quality, permanent SANI-TRED roofing system directly on these types of low quality materials. If installed upon a flat, clean surface the amount of SANI-TRED products required to seal the same size roof surface could be ten times less than what would be required if installed upon a rough, irregular, contaminated surface. Also, the bond to the old low quality roofing products can only be poor and temporary at best.
The flat roof owner should consider the following options;
OPTION #1 (often not practical)
Remove and strip all of the old roof materials down to the original substrate, (concrete or wood), and remove all residual tar contaminates and install a new SANI-TRED system directly on the clean base substrate.
OPTION #2 (Preferred Method of Flat Roof Transformation)
Before starting, remove all loose ballast stones. Install a new 3/4" tongue and groove plywood substrate directly over the existing flat roofing materials. If the existing underlying roof substrate is wood, it is extremely easy to nail down new plywood over all or a portion of the old roofing materials. This can be done a little at a time or all at once at the option of the contractor or building owner. Large, poorly fitted or excessively wide seams may be quickly filled, sealed and bonded using LRB/TAV mixtures. If the flat roof has no parapet walls install new drip edge and seal the drip edge and all flashing, mechanicals and vent pipes with LRB/TAV mixtures instead of tar.
Flat Plywood Roof
If parapet walls are also covered with old materials simply strip them to expose an area of vertical substrate below the wall cap which is not contaminated with tar or cover all contaminated vertical surfaces with plywood. Terminate the vertical plywood at a point on the vertical wall which is not contaminated with tar or other sealers. Prime the area and apply LRB/TAV mixture to completely bond and seal this point.
It is easy to attach the bottom of the new vertical plywood to the new horizontal plywood by installing securely nailed 2"X4" "L Corners" continuously under the plywood at all parapet wall perimeters. This provides a nice raise in grade to direct water from this crucial potential leaking point seam at the base of the parapet wall. It is not necessary that the vertical terminations be attached securely with nails or other mechanical fasteners. Often only a few fasteners, clamps or even weights are required at this point to temporarily hold the plywood tight to the wall until the LRB/TAV mixture is installed and cured. The LRB/TAV mixtures will secure the top of this new plywood wall completely and more securely than nails due to the extremely strong adhesive properties of the products.
To prevent water damage to the new plywood substrate all that is required is that Permaflex primer and LRB/TAV mixtures, (used on joints and seams), are applied at least 45 minutes before a rain to prevent droplet damage to the newly applied products.
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