Another material price hike coming?

I heard , Certainteed, Owens, G.A.F. , all manufacturers are planning 6% to 8% price increase within the month. Has anyone heard this, or , can anyone confirm this ? I am really getting sick of it. It seems everytime you blink, they sneak another increase on you. First it was the cost of oil, then the cost of asphalt. I am beginning to think it is the cost of their limo drivers health insurance.

Domestic Crude Oil Prices 1946-Present U.S. Average (in $/bbl.)

Year Nominal Inflation Adjusted 1946 $1.63 $17.81 1947 $2.16 $20.93 1948 $2.77 $24.97 1949 $2.77 $25.21 1950 $2.77 $24.95 1951 $2.77 $23.13 1952 $2.77 $22.61 1953 $2.92 $23.60 1954 $2.99 $24.13 1955 $2.93 $23.67 1956 $2.94 $23.46 1957 $3.14 $24.20 1958 $3.00 $22.53 1959 $3.00 $22.30 1960 $2.91 $21.34 1961 $2.85 $20.66 1962 $2.85 $20.42 1963 $2.91 $20.61 1964 $3.00 $20.96 1965 $3.01 $20.69 1966 $3.10 $20.70 1967 $3.12 $20.27 1968 $3.18 $19.78 1969 $3.32 $19.62 1970 $3.39 $18.93 1971 $3.60 $19.27 1972 $3.60 $20.66 1973 $4.75 $22.99 1974 $9.35 $41.03 1975 $12.21 $49.13 1976 $13.10 $49.89 1977 $14.40 $51.46 1978 $14.95 $49.69 1979 $25.10 $74.23 1980 $37.42 $98.52 1981 $35.75 $85.32 1982 $31.83 $71.52 1983 $29.08 $63.29 1984 $28.75 $59.98 1985 $26.92 $54.23 1986 $14.44 $28.54 1987 $17.75 $33.85 1988 $14.87 $27.28 1989 $18.33 $32.03 1990 $23.19 $38.35 1991 $20.20 $32.14 1992 $19.25 $29.73 1993 $16.75 $25.13 1994 $15.66 $22.89 1995 $16.75 $23.82 1996 $20.46 $28.25 1997 $18.64 $25.17 1998 $11.91 $15.84 1999 $16.56 $21.49 2000 $27.39 $34.45 2001 $23.00 $28.16 2002 $22.81 $27.46 2003 $27.69 $32.62 2004 $37.66 $43.17 2005 $50.04 $55.47 2006 $58.30 $62.65 2007 $64.20 $66.97 2008 $91.48 $91.77 2009 $53.48 $53.92 2010 Partial $69.85 $69.85

Shingles have doubled in price over the past 5 years. I don't think their cost have doubled.

yeah...I have heard the news...I think they all get together and raise their prices.

I have been told that we have the largest shingle manufacturing plant in the world (we have a new GAF/Elk plant), right here in Tuscaloosa AL, and I sometimes drive by there and look at their inventory...we also have a Tamko plant here too.....Right now they are both busting at the seams with inventory..I think they were expecting some hurricanes and it didn't happen. With the economy and things as they are, I don't understand the price increases either.